Waves. harmonic wave wave equation one dimensional wave equation principle of wave fronts plane waves law of reflection
|
|
- Wilfred Wilson
- 5 years ago
- Views:
Transcription
1 Waves Vocabulary mechanical wave pulse continuous periodic wave amplitude wavelength period frequency wave velocity phase transverse wave longitudinal wave intensity displacement wave number phase velocity traveling sinuoidal wave harmonic wave wave equation one dimensional wave equation principle of wave fronts plane waves law of reflection superposition angle of incidence interference destructive interference constructive interference in phase out of phase standing wave nodes antinodes natural frequencies resonant frequencies fundamental frequency overtones first harmonic second harmonic refraction diffraction 15-1 Characteristics of Wave Motion When you toss a rock into a still pond, you see circular waves form Waves can travel along a cord or a slinky Waves stem from a vibration The medium through which such mechanical waves travel itself vibrates This chapter deals with mechanical waves- like waves on water one must also consider the particles that are involved- these also oscillate about an equilibrium point Mechanical Waves 1. a wave can move over large distances with a particular speed Each particle of the medium in which the wave travels oscillates about an equilibrium point which is simple harmonic is the wave is sinusoidal Thus although a wave is not matter the wave pattern can travel in matter Waves carry energy from one place to another 1 RoessBoss physics for scientist and engineers
2 All forms of traveling waves transport energy A single wave bump is called a pulse a single pulse can be formed on a rope by a quick up and down motion The pulse travels along the rope the source of the wave is a disturbance and cohesive forces between adjacent pieces of rope causes the pulse to travel A continuos or periodic wave- has as its source a disturbance that is continuos and oscillating- can also be thought of as vibrations a source of a wave is a vibration vibration propagates outward- waves if the source vibrates sinusoidally then it is Simple Harmonic Motion (SHM) Wave Diagram and Vocabulary The high point is called the crest The amplitude is the maximum height of a crest or the depth of a trough relative to the normal or the mid point in the wave Wavelength- (lambda) Trough to trough or Crest to Crest Frequency ƒ (also can be v greek letter nu) the number of times the wave passes a point (counting crests/ complete cycles) Period T- the time required for one complete oscillation or one complete cycle of the wave to pass a given point along the line of travel wave velocity v- is the velocity at which wave crests (or any other part of the waveform) move 2 RoessBoss physics for scientist and engineers
3 Wave Velocity can also be referred to as the phase velocity- it must be distinguished from the velocity of a particle of the medium itself Example- wave along a cord, wave velocity is the right, velocity of particles is up or down A wave crests travels a distance of one wavelength, in one period. Thus the wave velocity v is equal to / T and since 1/T=ƒ Equation 15-1 (sinusoidal waves) 15-2 Wave Types Transverse and Longitudinal if a wave travels down a cord and transverses up and down then this is called a transverse wave (your typical wave) a longitudinal wave is on in which the vibration of the particles of the medium is along the same direction as the motion of the wave We use the terms compression and Expansion to label their crest and troughs A good example of longitudinal wave is sound the concepts of frequency, wavelength, period are all the same with longitudinal as they are with Sound waves need a medium to propagate and are actually variations in the density of the medium, alternating regions of expansion and compression 3 RoessBoss physics for scientist and engineers
4 Air there are lots of large spaces between the molecules- which makes it harder for density variations to propagate, compared with water, steel, or the thin walls of an apartment When you graph the compression and expansions of a longitudinal wave the graph looks like that of a transverse wave (sinusoidal) Velocity of Transverse Waves the velocity of a wave depends on the properties of the medium in which it travels On a cord it depends on the tension of the cord and on the mass per unit length of the cord Velocity of Longitudinal Waves For longitudinal waves it depends on the Elastic modulus of the material and its density You can derive this from the idea of impulse and momentum- which makes sense since you have to strike a drum head to make it vibrate which begins the longitudinal waves Other Waves Both transverse and longitudinal waves are produced when an earthquake occurs The transverse waves that travel through the body of the Earth are called S waves (S for Shear) The longitudinal waves are called P waves (P for Pressure) Both can travel through solid since the atoms or molecules can vibrate about their relatively fixed positions in any direction In fluid only longitudinal waves can propagate- because any transverse motion would experience no restoring force since a fluid is readily deformed 4 RoessBoss physics for scientist and engineers
5 This fact was used by geophysicists to discern the center of the earth and what it was constituted of Since only longitudinal waves are detected diametrically and not transverse, then the core must be liquid Remember that when they determine the center of an earthquake they triangulate the waves and then can find the core A wave on Water is a surface wave- it moves on the boundary between two mediums- air and water The reason waves crest or topple over at the coast is due to the water dragging at the bottom- that s why you can tell where the breaks in the bottom are from looking at the places where the waves are breaking 15-3 Energy Transported by Waves Waves transport energy from one place to another as it travels through a medium it transfers energy from one vibrating molecule to another You can have a very complex formula for three dimensional waves (speakers, Earth, etc) The energy transported by a wave is proportional to the square of the amplitude, and to the square of the frequency Equation Side note The average rate of energy transferred it the average power- just look at how the idea is connecting to previous material 5 RoessBoss physics for scientist and engineers
6 Equation Not Needed Just Connection point The Intensity I of a wave is defined as the average power transferred across unit are perpendicular to the direction of the energy flow Equation Not Needed Just Connection point If you have a wave that travels in three dimensions then you have to take in account all the area (sphere 4πr^2) The Power output is constant then the intensity decreases as the inverse square of the distance from the source If the distance doubles then the intensity is reduced to 1/4 of the earlier value The amplitude of a wave also decreases with distance The amplitude must then decrease as 1/r The situation is different for one dimensional wave The are remains constant in a one dimensional wave- amplitude remains constant, the amplitude and intensity also do not decrease Keep in mind we do know that with SHM there is a dampening seen- This is due to frictional forces- you have some energy transformed into thermal energy 6 RoessBoss physics for scientist and engineers
7 15-4 Mathematical Representation of a Traveling Wave Displacement- how far away from a given point (not distance) amplitude- maximum displacement Reminder Equation- Angular frequency Equation Connection Point wave number k is not the same thing as the spring constant k phase- where a wave is in motion phase velocity- describes the phase (shape of the wave) and can be written in terms of and k (wave number Equation Connection Point- not needed Traveling sinusoidal wave- harmonic wave 15-5 The Wave Equation Equation of motion for a wave- wave equation involves calculus due to the type of motion that is occurring in the wave 15-6 The Principle of superposition 7 RoessBoss physics for scientist and engineers
8 when two or more waves pass thought the same region of space at the same time it is found that for many waves the actual displacement is the vector (algebraic) sum of the separate displacements This is called the principle of superposition valid for mechanical waves as long as the displacement are not too large and there is a linear relationship between the displacement and the restoring force of the oscillating medium When the restoring force is not precisely proportional to the displacement for mechanical waves in some continuos medium, the speed of sinusoidal waves depends on the frequency The variation in frequency is called dispersion Basically- not all waves are pretty and perfect. Calculus aids alot in determining various type of information for waves that are influenced by other factors Reflection and Transmission When a wave strikes an obstacle or comes to the end of a medium, part of the wave is reflected We can also call this an echo- like when you yell in a canyon If the wave is traveling down a rope and the rope is fixed to the wall, then the wave is reflected perfectly- it is the inverse to what it came in as the inversion is said to be a phase change of 180 it is as if the phase shifted by 1/2 or 180 If it is not fixed to a surface, then the pulse overshoots its displacement is momentarily greater than that of the traveling pulse- there is no phase change that occurs 8 RoessBoss physics for scientist and engineers
9 Keep in mind that when a wave hits a surface like a wall (Newton s laws) You will have some of the energy absorbed by the wall Also part of it turns into thermal energy Wave fronts- for two or 3 dimensional waves (water) we look at wave fronts These are all the points along the wave forming the wave crest A line drawn in the direction of motion, perpendicular to the wave front is called a ray Wave Front the wave fronts far from the source will appear as if they have completely lost their curvature and are nearly straight- plane waves (ocean wave) Law of Reflection Law of Reflection-the angle of reflection equals the angle of incidence the angle the incident ray makes with the perpendicular to the reflecting surface (or the wave front makes with a tangent to the surface angle of reflection is the corresponding angle for the reflected wave 15-8 Interference 9 RoessBoss physics for scientist and engineers
10 interference refers to what happens when two waves pass through the same region of space at the same time it is an example of the superposition principle When the waves overlap the resultant displacement is the algebraic cum of their separate displacements (principle of superposition) the two wave amplitudes are opposite of one another as they pass by and the result is called destructive interference (out of phase) The two waves pass in phase of one another and the resultant is greater than either pulse then it is called constructive interference You can have a partial of this type of interference 15-9 Standing Waves; Resonance standing waves- there are two traveling waves that will produce a standing wave because it does not appear to be traveling- you can see the nodes very clearly You have to vibrate the cord at just the right frequency in order to obtain the standing wave nodes- there the cord remains still the entire time Antinodes- top of crest or bottom of troughs- maximum amplitude These will remain in a fixed position for a given frequency Standing waves can occur at more than one frequency the lowest frequency of vibration producing a standing wave gives rise to nodes that are the end points of the string The frequencies at which standing waves are produced are the natural frequencies or resonant frequencies 10 RoessBoss physics for scientist and engineers
11 standing waves represent the same phenomenon as the resonance of a vibrating spring or pendulum- the only difference is that the spring or pendulum has only one resonant frequency- cord has an infinite number of resonant frequency To determine the resonant frequencies you need to know the wavelength of the lowest frequency There is a relationship to the L which is the length of the cord Equation 15-5 The lowest frequency is called the fundamental frequency and corresponds to one antinode or loop The other natural frequencies are the overtones- they are integral multiples of the fundamental They are also called the harmonics- with the fundamental being referred to as the first harmonic, the next one has two loops and is called the second harmonic or the first overtone, etc Wavelength Equation 15-6 Frequency 11 RoessBoss physics for scientist and engineers
12 Equation Refraction When any wave strikes a boundary, some of the energy is reflected and some is transmitted or absorbed When one crosses a boundary into a medium where its velocity is different, the wave may move in a different direction than the incident wave- refraction you have seen this with the bending straw Equation Diagram of Refraction angle of refraction angle of incidence We can think of this as a proportion between the two mediums Equation RoessBoss physics for scientist and engineers
13 Diffraction When waves encounter an obstacle they bend around the objectdiffraction the amount of diffraction depends on the wavelength of the eave and on the size of the obstacle Equation 15-9 only if the wavelength is smaller than the size of the object will there be a significant shadow region 13 RoessBoss physics for scientist and engineers
Wave Motion. interference destructive interferecne constructive interference in phase. out of phase standing wave antinodes resonant frequencies
Wave Motion Vocabulary mechanical waves pulse continuous periodic wave amplitude period wavelength period wave velocity phase transverse wave longitudinal wave intensity displacement amplitude phase velocity
More informationChapter 15 Wave Motion. Copyright 2009 Pearson Education, Inc.
Chapter 15 Wave Motion 15-1 Characteristics of Wave Motion All types of traveling waves transport energy. Study of a single wave pulse shows that it is begun with a vibration and is transmitted through
More informationSlide 2 / 28 Wave Motion. A wave travels along its medium, but the individual particles just move up and down.
Slide 1 / 28 Waves Slide 2 / 28 Wave Motion A wave travels along its medium, but the individual particles just move up and down. Slide 3 / 28 Wave Motion All types of traveling waves transport energy.
More informationPhysics Mechanics
1 Physics 170 - Mechanics Lecture 33 Waves Wave notion 2 A wave pulse is a disturbance that propagates through a medium. It transfers energy without transferring matter; the energy is a combination of
More informationAlgebra Based Physics
Algebra Based Physics Waves www.njctl.org Table of Contents Click on the topic to go to that section Types of Waves Standing Waves on a String Table of Contents https://www.njctl.org/video/?v=ywgtos4xmqo
More informationMechanical waves Electromagnetic waves
Waves Energy can be transported by transfer of matter. For example by a thrown object. Energy can also be transported by wave motion without the transfer of matter. For example by sound waves and electromagnetic
More informationQuestion. A. Incorrect! Check the definition for period. B. Incorrect! Check the definition for speed.
AP Physics - Problem Drill 11: Vibrations and Waves. Instruction: (1) Read the problem statement and answer choices carefully (2) Work the problems on paper as 1. The following definitions are used to
More informationThe physicist's greatest tool is his wastebasket Albert Einstein
Chapter 20: Waves The physicist's greatest tool is his wastebasket Albert Einstein 2 20.1 Waves Describe transverse and longitudinal waves. Learn the properties of waves. Calculate the speed of a wave.
More informationChapter 14: Waves. What s disturbing you?
Chapter 14: Waves What s disturbing you? Wave Properties Waves carry energy through matter. The matter can move with the wave, or at right angles to it. Newton s laws and conservation laws govern the behavior
More informationPre AP Physics: Unit 7 Vibrations, Waves, and Sound. Clear Creek High School
Pre AP Physics: Unit 7 Vibrations, Waves, and Sound Clear Creek High School Simple Harmonic Motion Simple Harmonic Motion Constant periodic motion of an object. An object oscillates back and forth along
More informationTransverse waves cause particles to vibrate perpendicularly to the direction of the wave's motion (e.g. waves on a string, ripples on a pond).
Waves Introduction A vibration must be the source of a wave. Waves in turn also cause vibrations. They are intrinsically connected. Waves transmit energy. There are different ways in which waves can be
More informationChapter 11 Waves. Waves transport energy without transporting matter. The intensity is the average power per unit area. It is measured in W/m 2.
Energy can be transported by particles or waves: Chapter 11 Waves A wave is characterized as some sort of disturbance that travels away from a source. The key difference between particles and waves is
More informationSection 1 Types of Waves. Distinguish between mechanical waves and electromagnetic waves.
Section 1 Types of Waves Objectives Recognize that waves transfer energy. Distinguish between mechanical waves and electromagnetic waves. Explain the relationship between particle vibration and wave motion.
More informationWaves & Interference
Waves & Interference I. Definitions and Types II. Parameters and Equations III. Sound IV. Graphs of Waves V. Interference - superposition - standing waves The student will be able to: HW: 1 Define, apply,
More informationCore Concept. PowerPoint Lectures Physical Science, 8e. Chapter 5 Wave Motions and Sound. New Symbols for this Chapter 2/20/2011
PowerPoint Lectures Physical Science, 8e Chapter 5 Wave Motions and Sound New Symbols for this Chapter T-Period f-frequency v-wave speed λ-wavelength A-Amplitude Sound is transmitted as increased and decreased
More informationChs. 16 and 17 Mechanical Waves
Chs. 16 and 17 Mechanical Waves The nature of waves A wave is a traveling disturbance that carries energy from one place to another, and even though matter may be disturbed as a wave travels through a
More informationINTRODUCTION TO WAVES. Dr. Watchara Liewrian
INTRODUCTION TO WAVES Dr. Watchara Liewrian What are Waves? Rhythmic disturbances that carry energy without carrying matter Types of Waves Mechanical Waves need matter (or medium) to transfer energy A
More informationWave. 1. Transverse 2. Longitudinal 3. Standing
Wave Wave: A disturbance traveling through a medium by which energy is transferred from one particle of the medium to another without causing any permanent displacementof the medium itself. (A Wave Transports
More informationSimilarly to elastic waves, sound and other propagated waves are graphically shown by the graph:
Phys 300/301 Physics: Algebra/Trig Eugene Hecht, 3e. Prepared 01/24/06 11.0 Waves & Sounds There are two fundamental waves of transporting energy and momentum: particles and waves. While they seem opposites,
More informationPhysics 11. Unit 7 (Part 1) Wave Motion
Physics 11 Unit 7 (Part 1) Wave Motion 1. Introduction to wave Wave motion is a popular phenomenon that we observe often in our daily lives. For example, light waves, sound waves, radio waves, water waves,
More informationDefine transverse waves and longitudinal waves. Draw a simple diagram of each
AP Physics Study Guide Chapters 11, 12, 24 Waves, Sound, Light & Interference Name Write the equation that defines each quantity, include units for all quantities. wave speed-wavelength equation natural
More informationPreview. Vibrations and Waves Section 1. Section 1 Simple Harmonic Motion. Section 2 Measuring Simple Harmonic Motion. Section 3 Properties of Waves
Vibrations and Waves Section 1 Preview Section 1 Simple Harmonic Motion Section 2 Measuring Simple Harmonic Motion Section 3 Properties of Waves Section 4 Wave Interactions Vibrations and Waves Section
More informationLesson 14: Simple harmonic motion, Waves (Sections )
Circular Motion and Simple Harmonic Motion The projection of uniform circular motion along any ais (the -ais here) is the same as simple harmonic motion. We use our understanding of uniform circular motion
More informationWaves Physics Waves What is a wave and what does it carry? Types of Waves 1. Transverse
Waves Physics 20.1 Waves What is a wave and what does it carry? Types of Waves 1. Transverse A transverse wave has its oscillations/vibrations to the direction the wave moves. 2. Longitudinal A longitudinal
More informationIntroduction. Strand E Unit 2: The Nature of Waves. Learning Objectives. Introduction.
Learning Objectives At the end of this unit you should be able to Describe the main features of diffraction, refraction and reflection, and use the law of reflection. Describe how two progressive waves
More informationDefined as a transfer of energy, in the form of a temporary disturbance of a medium, where the medium itself does not move.
Waves: Defined as a transfer of energy, in the form of a temporary disturbance of a medium, where the medium itself does not move. Three Classifications of waves: 1. Mechanical waves: These are waves that
More informationVibrations are the sources of waves. A vibration creates a disturbance in a given medium, that disturbance travels away from the source, carrying
Vibrations are the sources of waves. A vibration creates a disturbance in a given medium, that disturbance travels away from the source, carrying energy with it, we call this traveling disturbance a wave.
More information4.4 WAVE CHARACTERISTICS 4.5 WAVE PROPERTIES Student Notes
4.4 WAVE CHARACTERISTICS 4.5 WAVE PROPERTIES Student Notes I. DIFFERENT TYPES OF WAVES A. TRANSVERSE AND LONGITUDINAL WAVES B. WAVE PULSES AND TRAVELLING WAVES C. SOUND AND WATER WAVES II. DEFINING TERMS
More informationCH 17 - MECHANICAL WAVES & SOUND. Sec Mechanical Waves
CH 17 - MECHANICAL WAVES & SOUND Sec. 17.2 - Mechanical Waves Mechanical Wave - disturbance in matter that carries energy from one place to another. Mechanical waves require matter called a MEDIUM to travel
More informationSound waves... light waves... water waves...
Sound waves... light waves... water waves... 1S-13 Slinky on Stand Creating longitudinal compression waves in a slinky What happens when you pull back and release one end of the slinky? 4/11/2011 Physics
More informationWave a repeating disturbance or movement that transfers energy through matter or space
Waves The Nature of Waves Wave a repeating disturbance or movement that transfers energy through matter or space 1. Molecules pass energy on to neighboring molecules. 2. Waves carry energy without transporting
More informationChapter 11 Waves. Waves transport energy without transporting matter. The intensity is the average power per unit area. It is measured in W/m 2.
Chapter 11 Waves Energy can be transported by particles or waves A wave is characterized as some sort of disturbance that travels away from a source. The key difference between particles and waves is a
More informationUnits of Chapter 14. Types of Waves Waves on a String Harmonic Wave Functions Sound Waves Standing Waves Sound Intensity The Doppler Effect
Units of Chapter 14 Types of Waves Waves on a String Harmonic Wave Functions Sound Waves Standing Waves Sound Intensity The Doppler Effect Units of Chapter 14 Optional Superposition and Interference Beats
More informationPeriod: Date: 1. A single disturbance that moves from point to point through a medium is called a. a. period b. periodic wave c. wavelength d.
Name: Quiz Wave Phenomena Period: Date: 1. A single disturbance that moves from point to point through a medium is called a. a. period b. periodic wave c. wavelength d. pulse 2. If the particles of the
More informationCHAPTER 10 WAVES. Section 10.1 Types of Waves
CHAPTER 10 WAVES Section 10.1 Types of Waves What does a wave carry? How are waves generated? What is the difference between a transverse wave and a longitudinal waves? How do the particles in ocean waves
More informationChapter 16. Waves-I Types of Waves
Chapter 16 Waves-I 16.2 Types of Waves 1. Mechanical waves. These waves have two central features: They are governed by Newton s laws, and they can exist only within a material medium, such as water, air,
More informationNot all waves require a medium to travel. Light from the sun travels through empty space.
What are waves? Wave Definition: A disturbance that transfers energy from place to place. What carries waves? A medium, a medium is the material through which a wave travels. A medium can be a gas, liquid,
More informationWaves Mechanical Waves Amplitude Frequency / Period Wavelength Wave Phases Wave Speed : Wave Basics / Wave Properties
Waves Mechanical Waves Amplitude Frequency / Period Wavelength Wave Phases Wave Speed 13.1 : Wave Basics / Wave Properties Waves Medium A medium is the material, which a wave travels through (Solid, liquid,
More informationg L Agenda Chapter 13 Problem 28 Equations of Motion for SHM: What if we have friction or drag? Driven Oscillations; Resonance 4/30/14 k m f = 1 2π
Agenda Today: HW quiz, More simple harmonic motion and waves Thursday: More waves Midterm scores will be posted by Thursday. Chapter 13 Problem 28 Calculate the buoyant force due to the surrounding air
More informationQuestions. Background. Equipment. Activities LAB 3. WAVES
Questions LAB 3. WAVES How can we measure the velocity of a wave? How are the wavelength, period, and speed of a wave related? What types of behavior do waves exhibit? Background Consider what happens
More informationPhysics 1-2 Mr. Chumbley Physics: Chapter 11 p
Physics 1-2 Mr. Chumbley Physics: Chapter 11 p. 362-401 Section 1 p. 364 371 Section 2 p. 372-377 Simple Harmonic Motion There exist many different situations in which objects oscillate in regular, repeating
More informationWaves-Wave Basics. 1. Which type of wave requires a material medium through which to travel? 1. sound 2. television 3. radio 4.
Waves-Wave Basics 1. Which type of wave requires a material medium through which to travel? 1. sound 2. television 3. radio 4. x ray 2. A single vibratory disturbance moving through a medium is called
More informationChapter 14. Vibrations and Waves
Chapter 14 Vibrations and Waves Chapter 14 Vibrations and Waves In this chapter you will: Examine vibrational motion and learn how it relates to waves. Determine how waves transfer energy. Describe wave
More informationDEVIL PHYSICS THE BADDEST CLASS ON CAMPUS AP PHYSICS
DEVIL PHYSICS THE BADDEST CLASS ON CAMPUS AP PHYSICS LSN 11-7: WAVE MOTION LSN 11-8: TYPES OF WAVES; LONGITUDINAL AND TRANSVERSE LSN 11-9: ENERGY TRANSPORTED BY WAVES Physics of Waves Questions From Reading
More informationLecture Outline Chapter 14. Physics, 4 th Edition James S. Walker. Copyright 2010 Pearson Education, Inc.
Lecture Outline Chapter 14 Physics, 4 th Edition James S. Walker Chapter 14 Waves and Sound Units of Chapter 14 Types of Waves Waves on a String Harmonic Wave Functions Sound Waves Sound Intensity The
More informationCH 17 - MECHANICAL WAVES & SOUND. Sec Mechanical Waves
CH 17 - MECHANICAL WAVES & SOUND Sec. 17.2 - Mechanical Waves Mechanical Wave - disturbance in matter that carries energy from one place to another. Mechanical waves require matter called a MEDIUM to travel
More informationCHAPTER 14 VIBRATIONS & WAVES
Physics Approximate Timeline Students are expected to keep up with class work when absent. CHAPTER 14 VIBRATIONS & WAVES Day Plans for the day Assignments for the day 1 Section 14.1 Periodic Motion o Definitions
More informationWhat are waves? Wave
What are waves? Wave Definition: A disturbance that transfers energy from place to place. What carries waves? A medium, a medium is the material through which a wave travels. A medium can be a gas, liquid,
More informationParts of Longitudinal Waves A compression
1 Waves All substantive material is from Wave Motion and Sound by James Dann. http://www.ck12.org/flexr/ unless otherwise noted. Illustrations are copyright free. Objects in motion that return to the same
More informationWaves Multiple Choice
Waves Multiple Choice PSI Physics Name: 1. The distance traveled by a wave in one period is called? A. Frequency B. Period C. Speed of wave D. Wavelength E. Amplitude 2. Which of the following is the speed
More informationSection 1: Types of Waves
Waves Section 1 Section 1: Types of Waves Preview Key Ideas Bellringer What Is a Wave? Vibrations and Waves Transverse and Longitudinal Waves Surface Waves Waves Section 1 Key Ideas What does a wave carry?
More informationToday: waves. Exam Results. Wave Motion. What is moving? Motion of a piece of the rope. Energy transport
Exam: Exam scores posted on Learn@UW No homework due next week Exam Results D C BC B AB A Today: waves Have studied Newton s laws, motion of particles, momentum, energy, etc. Laws for describing things
More informationSection 1 Types of Waves
CHAPTER OUTLINE Section 1 Types of Waves Key Idea questions > What does a wave carry? > How are waves generated? > What is the difference between a transverse wave and a longitudinal wave? > How do the
More informationChapter 10: Waves The Test. Types of Waves: Surface Waves. Wave concepts. Types of Waves: Compression Waves. Types of Waves: Compression Waves
Chapter 10: Waves The Test Average score: 25/30 http://ps100.byu.edu/syllabus.aspx 40 Multiple Choice Scores 35 30 25 20 Frequency 15 10 Did you read chapter 10 before coming to class? A. Yes B. No 5 0
More informationa wave is a rhythmic disturbance that carries/transfers energy through matter or space A repeating movement
a wave is a rhythmic disturbance that carries/transfers energy through matter or space A repeating movement Mechanical Waves require a medium medium: the matter through which a wave travels examples: water,
More informationCharacteristics of Waves
Chapter 15 Characteristics of Waves Waves disturbances that carry energy through matter or space Waves transfer energy. The energy being transferred may spread out as waves travel. Characteristics of Waves
More informationChapter 20 Study Questions Name: Class:
Chapter 20 Study Questions Name: Class: Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. As the wavelength increases, the frequency a. decreases.
More informationWAVES. Pulses are disturbances or a single wave motion. A continuous production of pulses will give rise to a progressive wave (wave train).
1 WAVES Types of Waves Pulses Pulses are disturbances or a single wave motion. A continuous production of pulses will give rise to a progressive wave (wave train). Progressive Waves A progressive wave
More informationWaves and Sound. Honors Physics
Waves and Sound Honors Physics Simple Harmonic Motion Refers to repetitive, cyclical motion (like a pendulum or waves) Can be described with sine curve For a pendulum only T 2 L g Example problem The world
More informationPhysics 101 Lecture 20 Waves & Sound
Physics 101 Lecture 20 Waves & Sound Recall we ve talked about transverse & longitudinal waves: - transverse waves: medium motion is to wave motion - longitudinal (pressure) waves: medium motion is to
More informationIntroduction to Waves
Introduction to Waves 1 What s a wave? A wave is a disturbance that transfers energy from one place to another. The direction of energy transfer is the direction of propagation of the wave. 2 Transverse
More information6. An oscillator makes four vibrations in one second. What is its period and frequency?
Period and Frequency 19.1 The period of a pendulum is the time it takes to move through one cycle. As the ball on the string is pulled to one side and then let go, the ball moves to the side opposite the
More informationCHAPTER 8: MECHANICAL WAVES TRANSMIT ENERGY IN A VARIETY OF WAYS
CHAPTER 8: MECHANICAL WAVES TRANSMIT ENERGY IN A VARIETY OF WAYS DISCLAIMER FOR MOST QUESTIONS IN THIS CHAPTER Waves are always in motion, as they transmit energy and information from one point to another.
More informationMechanical Waves. Chapter 15. PowerPoint Lectures for University Physics, Thirteenth Edition Hugh D. Young and Roger A. Freedman
Chapter 15 Mechanical Waves PowerPoint Lectures for University Physics, Thirteenth Edition Hugh D. Young and Roger A. Freedman Lectures by Wayne Anderson Goals for Chapter 15 To study the properties and
More informationCh13. Vibrations and Waves HW# 1, 5, 9, 13, 19, 29, 35, 37, 39, 41, 43, 47, 51, 53, 61
Ch13. Vibrations and Waves HW# 1, 5, 9, 13, 19, 29, 35, 37, 39, 41, 43, 47, 51, 53, 61 If you displace a system that obeys Hooke s Law, It will follow simple harmonic motion. The system will oscillate.
More information20.1 Waves. A wave is an oscillation that travels from one place to another. Because waves can change motion, they are a travelling form on energy.
Waves Chapter 20 1 20.1 Waves A wave is an oscillation that travels from one place to another. Because waves can change motion, they are a travelling form on energy. 2 Recognizing Waves Waves are present:
More informationSECTION 1 & 2 WAVES & MECHANICAL WAVES
WAVES!!!! SECTION 1 & 2 WAVES & MECHANICAL WAVES What is a Wave? A wave is a disturbance that travels through space or matter. When undisturbed, the water is found in its equilibrium or rest position.
More informationTraveling Waves vs. Standing Waves
The Physics Classroom» Physics Tutorial» Waves» Traveling Waves vs. Standing Waves Waves - Lesson 4 - Standing Waves Traveling Waves vs. Standing Waves Traveling Waves vs. Standing Waves Formation of Standing
More informationChapters 25: Waves. f = 1 T. v =!f. Text: Chapter 25 Think and Explain: 1-10 Think and Solve: 1-4
Text: Chapter 25 Think and Explain: 1-10 Think and Solve: 1-4 Chapters 25: Waves NAME: Vocabulary: wave, pulse, oscillation, amplitude, wavelength, wave speed, frequency, period, interference, constructive,
More informationSlide 1 / The distance traveled by a wave in one period is called? Frequency Period Speed of wave Wavelength Amplitude
Slide 1 / 20 1 The distance traveled by a wave in one period is called? Frequency Period Speed of wave Wavelength mplitude Slide 2 / 20 2 Which of the following is the speed of a wave traveling with a
More informationHarmonics and Sound Exam Review
Name: Class: _ Date: _ Harmonics and Sound Exam Review Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. Which of the following is not an example
More informationChapter 17 Mechanical Waves
Pearson Prentice Hall Physical Science: Concepts in Action Chapter 17 Mechanical Waves 17.1 Mechanical Waves Objectives: 1. Explain what causes mechanical waves 2. Name and describe the three main types
More informationENERGY OF WAVES ch.1 PRACTICE TEST
ENERGY OF WAVES ch.1 PRACTICE TEST Multiple Choice Identify the choice that best completes the statement or answers the question. 1. If a wave is traveling at a certain speed and its frequency is doubled,
More informationHow do waves transfer energy?
waves chapter 5 167 How do waves transfer energy? Standard 5: Students will understand the properties and applications of waves. Standard 5, Objective 1: Demonstrate an understanding of mechanical waves
More informationWaves Wave Characteristics
Name: Date: Waves 4.4 Wave Characteristics. A transverse travelling wave has amplitude A 0 and wavelength λ. The distance between a crest and its neighbouring trough, measured in the direction of energy
More informationExam Results, HW4 reminder. Wave Motion. Today: waves. What is moving? Motion of a piece of the rope. Exam Results. Average
Exam Results, HW4 reminder Exam: Class average = 14.1/20 ( at B/BC boundary) Exam scores posted this afternoon on Learn@UW Exam solutions will be posted on course web page HW3 (short) assigned at WileyPLUS
More informationChapter # 08 Waves. [WAVES] Chapter # 08
Chapter # 08 Waves Q2) Write short answers of the following questions. i) What is the difference between progressive and stationary waves? Answer: Progressive Waves 1 Progressive waves are the result of
More informationPhysics Waves & Sound
Read Page 298 (Wave Characteristics) TQ1. How is a pulse different from a wave? Physics Waves & Sound Day 1 TQ2. What actually moves down a slinky when in the form of a wave? TQ3. What two things happen
More informationMECHANICAL WAVES AND SOUND
MECHANICAL WAVES AND SOUND Waves Substances have a stable equilibrium state Uniform pressure everywhere throughout the substance Atomic springs are at their equilibrium length Can make a wave by disturbing
More informationWAVES. Unit 3. Sources: Ck12.org
WAVES Unit 3 Sources: Ck12.org BELLRINGER DAY 01 1. How do you think energy travels? 2. Are all waves the same? Explain. LONGITUDINAL WAVES Amplitude, Rarefaction, and Compression WHAT ARE WAVES? Waves
More informationChapter 14 Waves http://faraday.physics.utoronto.ca/iyearlab/intros/standingwaves/flash/long_wave.html Apr 30 7:11 AM May 5 7:16 AM 1 May 5 7:17 AM May 5 7:17 AM 2 May 5 7:19 AM May 5 7:29 AM 3 May 5 7:30
More informationWaves. Kevin Small or
Waves Opening note: X-rays can penetrate your body. Sound waves can make thinks vibrate; water waves can knock you over in the sea. Infrared waves can warm you up and slinky waves are fun to play with.
More informationChapter 12: Mechanical Waves and Sound
Chapter 12 Lecture Chapter 12: Mechanical Waves and Sound Goals for Chapter 12 To describe mechanical waves. To study superposition, standing waves and sound. To present sound as a standing longitudinal
More informationSection 4.2. Travelling Waves
Section 4.2 Travelling Waves Wave Motion A wave is the motion of a disturbance Mechanical waves require Some source of disturbance A medium that can be disturbed Some physical connection between or mechanism
More information17.1: Mechanical Waves
New Standard SPS9: Students will investigate the properties of waves. a. Recognize that all waves transfer energy. b. Relate frequency and wavelength to the energy of different types of electromagnetic
More informationPractice Problems For 1st Wave Exam
For 1st Wave Exam 1. Which wave diagram has both wavelength ( ) and amplitude (A) labeled correctly? A) B) C) 5. The energy of a sound wave is most closely related to the wave's A) frequency B) amplitude
More informationP11 Waves 1 Basics.notebook December 13, 2013
Ace Ventura Slinky Scene 1 Unit 4- Waves Waves are caused by vibrations, such as objects undergoing simple harmonic motion. Although water waves, sound waves, springs, and light all seem very different,
More informationDoppler Effect. PHY132H1F Introduction to Physics II Class 3 Outline:
PHY132H1F Introduction to Physics II Class 3 Outline: Doppler Effect Principle of Superposition Standing Waves on a String Standing Sound Waves Wave Interference Beats Survey: How did the reading go that
More informationChapter 14 Waves. Apr 30 7:11 AM
Chapter 14 Waves http://faraday.physics.utoronto.ca/iyearlab/intros/standingwaves/flash/long_wave.html Apr 30 7:11 AM 1 May 5 7:16 AM 2 May 5 7:17 AM 3 May 5 7:17 AM 4 May 5 7:19 AM 5 May 5 7:29 AM 6 May
More informationPHYSICS - GIANCOLI CALC 4E CH 15: WAVE MOTION.
!! www.clutchprep.com CONCEPT: WHAT IS A WAVE? A WAVE is a moving disturbance (oscillation) that carries energy. - A common example is a wave on a string, where the moving string carries energy We re only
More informationHITES, 2011 Lecture 1 1. You are in a boat out on the ocean watching the waves go by. To fully describe the waves, you need three things:
Waves A wave is a that propagates p in a certain direction with a certain speed. 1D 2D 3D Physical medium Waves in water Waves in elastic bodies Sound Empty space (a vacuum) Electromagnetic waves HITES,
More informationPHYSICS - CLUTCH CH 16: WAVES & SOUND.
!! www.clutchprep.com CONCEPT: WHAT IS A WAVE? A WAVE is a moving disturbance (oscillation) that carries energy. - A common example is a wave on a string, where the moving string carries energy We re only
More informationCover Sheet-Block 6 Wave Properties
Cover Sheet-Block 6 Wave Properties Name Standards-Physics 4 a b c d 4a. Students know waves carry energy from one place to another. 4. b. Students know how to identify transverse and longitudinal waves
More informationMechanical Waves and Sound
Mechanical Waves and Sound Mechanical Wave Medium Crest Trough Transverse wave Compression Rarefaction Longitudinal wave Surface wave Some Vocab to Know What are Mechanical Waves? Mechanical wave: disturbance
More informationToday: waves. Exam Results, HW4 reminder. Chapter 8: Wave Motion. What is moving? Energy transport. Motion of a piece of the rope
Exam Results, HW4 reminder Exam: Class average = 13.6/20 ( at B/BC boundary) Exam scores posted this afternoon on Learn@UW Exam solutions are on course web page March Chap 7: Question A, Exercises 2 Griffith
More informationTopic 4.4 Wave Characteristics (2 hours)
Topic 4.4 Wave Characteristics (2 hours) You must live in the present, launch yourself on every wave, find your eternity in each moment. Henry David Thoreau 1 What s a wave? A wave is a disturbance that
More informationTable of Contents. Chapter: Waves. Section 1: The Nature of Waves. Section 2: Wave Properties. Section 3: The Behavior of Waves
Table of Contents Chapter: Waves Section 1: The Nature of Waves Section 2: Wave Properties Section 3: The Behavior of Waves 1 The Nature of Waves What s in a wave? A wave is a repeating disturbance or
More informationChapter 20 - Waves. A wave - Eg: A musician s instrument; a cell phone call & a stone thrown into a pond A wave carries from one place to another.
Section 20.1 - Waves Chapter 20 - Waves A wave - Eg: A musician s instrument; a cell phone call & a stone thrown into a pond A wave carries from one place to another. Waves can change motion, we know that
More informationUNIT IV: SOUND AND LIGHT Chapter 25-31
IMPORTANT TERMS: Amplitude Antinodes Blue shift Bow wave Constructive interference Crest Destructive interference Doppler effect Frequency Hertz In phase Interference pattern Longitudinal wave Node Out
More informationExercises Vibration of a Pendulum (page 491) 25.2 Wave Description (pages ) 25.3 Wave Motion (pages )
Exercises 25.1 Vibration of a Pendulum (page 491) 1. The time it takes for one back-and-forth motion of a pendulum is called the. 2. List the two things that determine the period of a pendulum. 3. Circle
More information