Phys_1080 - 11 Speed of Sound

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5. What is the amplitude of the wave in the diagram below? •6. A0.060 m •7. A outward from its source to produce circular wave patterns. If the frequency of the source is 2.00 Hz and the wave speed is 5.00m/s then the dis tance between adjacent wave cres ts is meter. irequency of Hz. s waves which emanate

A piano tuner stretches a steel piano wire with a tension of 765 N. The steel wire has a length of 0.800 m and a mass of 6.00 g . Part A What is the frequency fi of the string's fundamental mode of vibration? Express your answer numerically in hertz using three significant figures. • View Available Hint(s) ν ΑΣφ ? fi = Hz Submit Part B What is the number n of the highest harmonic that could be heard by a person who is capable of hearing frequencies up to f = 16 kHz? Express your answer exactly. • View Available Hint(s) ? n =

How do I answer 1 and 2

How would you represent the following problems with the given data in drawings or pictures? 4.- Calculate the speed or magnitude of the speed with which a longitudinal wave propagates with a frequency of 120 Hz/s and a wavelength of 10 m/cycle. 1.- What is the illumination produced by a 120 cd lamp on a perpendicular surface located at a distance of 2.5 cm away? 2.- A lamp in a classroom has an intensity of 250 cd, what is the illumination that it produces on a notebook, if there is a distance of 3m and an angle of 45º between them? I would be grateful for your answers :) :)

Speed of Sound, Frequency, and Wavelength• Define pitch.• Describe the relationship between the speed of sound, its frequency, and its wavelength.• Describe the effects on the speed of sound as it travels through various media.• Describe the effects of temperature on the speed of sound.

A wave travels with speed 196 m/s. Its wave number is 1.70 rad/m Part A What is its wavelength? Express your answer with the appropriate units. ► View Available Hint(s) Value Submit μA Part B Units ? What is its frequency? Express your answer with the appropriate units.

Sound Interference and Resonance: Standing Waves in Air Columns• Define antinode, node, fundamental, overtones, and harmonics.• Identify instances of sound interference in everyday situations.• Describe how sound interference occurring inside open and closed tubes changes the characteristics of the sound,and how this applies to sounds produced by musical instruments.• Calculate the length of a tube using sound wave measurements.

Numerical - Standing Waves Two waves traveling in opposite directions produce a standing wave. The individual wave functions are Yı = (4.0cm) sin(3.0x – 2.0t) andy, = (4.0cm) sin(3.0x + 2.0t) %3D 1. Find the amplitude of the simple harmonic motion of the element of the medium located at x = 2.3 cm. II. Find the positions of the nodes and antinodes if one end of the string is at x = 0. III. What is the maximum value of the position in the simple harmonic motion of an element located at an antinode?

A water wave traveling in a straight line on a lake is described by the equation y (x, t) (2.75 cm) cos (0.410 rad/cm x + 6.20 rad/st) where y is the displacement perpendicular to the undisturbed surface of the lake. = Part A How much time does it take for one complete wave pattern to go past a fisherman in a boat at anchor? Express your answer with the appropriate units. t = Submit Part B 8 = Value Part C Submit | MA What horizontal distance does the wave crest travel in that time? Express your answer with the appropriate units. k= Request Answer Value μA Submit What is the wave number? Request Answer IVE ΑΣΦΑ Units Request Answer ? Units ? ? rad/cm

For items 1-2 choose only one correct answer. No need for explanations. 1. What is interference? A. It occurs when two or more waves overlap and combine. B. It occurs when two or more waves combine and neutralize each other. C. They are not affected by the interference and maintain their original amplitude throughout the movement. D. They are temporarily affected by interference created new amplitude but resume on their original amplitude until the end movement. 2. Which of the following statements is TRUE when two waves temporarily interfere witch each other then resume their course of movement? A. Both waves counteracted and cease to exist. B. They rake on and keep a new amplitude based on the result of the interference until the end of the movement. C. They are not affected by the interference, created a new amplitude but resume on their original amplitude until the end of the movement.

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Continue Your Exploration Name: Date: Check out the path below or go online to choose one of the other paths shown. • Hands-On Labs O Designing Soundproof Go online to choose one of these other paths. • Engineering to Prevent Rooms Earthquake Damage • Propose Your Own Path When engineers design recording studios or practice spaces for musicians, they carefully consider ways to make the rooms ideal at handling loud sounds. Typically, they design the rooms to address several problems. These problems include echoes inside the room that make it hard to hear the desired sound and sounds that are loud enough that they can even be heard outside of the room. 1. Categorize the wave phenomena by the music studio problem that they relate to. Each problem may have more than one wave phenomena associated with it. WORD BANK •absorption • reflection Echoes Sound audible in other rooms. • transmission Lesson 2 The Behavior of Mechanical Waves

Part A A thin, 70.0-cm wire has a mass of 16.0 g. One end is tied to a nail, and the other end is attached to a screw that can be adjusted to vary the tension in the wire. To what tension (in newtons) must you adjust the screw so that a transverse wave of wavelength 3.38 cm makes 626 vibrations per second? T = N Submit Request Answer • Part B How fast would this wave travel? Express your answer with the appropriate units. ? Value Units Submit Request Answer

Kindly provide CLEAR and COMPLETE solutions  #1

A hammer taps on the end of a 3.6-m-long metal bar at room temperature. A microphone at the other end of the bar picks up two pulses of sound, one that travels through the metal and one that travels through the air. The pulses are separated in time by 8.80 ms. Part A What is the speed of sound in this metal? Express your answer to two significant figures and include the appropriate units. V = ☐☐ HÅ Value Submit Request Answer Units wwwww ?

Problem 1 An effective sound pressure value of 0.04 N/m² is determined in a progressive plane wave.How high is the particle velocity of the sound (at goc= 400 kg/sm²), the particle displacement at the frequencies 100 Hz and 1000 Hz, the sound intensity, the sound power permeating a surface of 4m² and sound pressure, sound intensity, and sound power levels for the surface 4 m2? • • •

Task 4 A support beam is subjected to vibrations along its length, emanating from two machines situated at opposite ends of the beam. The displacement caused by the vibrations can be modelled by the following equations,x1 3.75 sin ( 100nt + mm %3D X2 = 4.42 sin ( 100t –2) mm - a. State the amplitude, phase, frequency and periodic time of each of these waves. b. When both machines are switched on, how many seconds does it take for each machine to produce its maximum displacement? c. At what time does each vibration first reach a displacement of – 2mm? d. Use the compound angle formulae to expand x1 and x2 into the form A sin 100rt ± B cos 100nt, where A and B are numbers to be found.

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QUESTION 4 Lab Exercise 6: Calculating the Speed of Sound Use the equation: λ = 4(L + 0.3d) , to solve for the wavelength of sound.  This is the info I can give you: 3 cm diameter of plastic pvc pipe 17 cm of water 1 meter pvc tube  100 cm - 16.9 cm = 83.1 cm from the top of the tube to the top of the water gave me the loudest sound What is the calculated wavelength?

4- Explain on how one can solve the equation of wave propagation for a 2D (two dimensional) problem. Introduce the possible boundary condition(s). Explain about the influential parameters in the wave propagation analysis. Consider the equation and its particular solution ways. ·

= 1 m/s 4. Application Directions: Solve the following problems 1. A boat is approaching the shore. The frequency of some approaching ocean waves is 2 Hz and the length between two wave crests is 3 m. What is the speed of the ocean waves moving towards the shore?

Answer the following questions about complex waveforms: A. Explain how a complex wave is generated. B. What is the main difference between a simple wave form (sine wave) and a complex waveform? And what is the method used to break the complex waveform in to its sinusoidal component? C. Write an example of a complex sine wave (Support your answer by drawing).

Chapter Two Fundamental Aspects of Compressible Flow Dr. Tahseen Ahmad Tahseen Question One Suppose that a cruise missile under test is moving horizontally at M = 2, in the atmosphere at an elevation of 305 m above the earth's surface. How long does it take for an observer on the ground to hear the disturbance from the instant when it is directly overhead? Assume standard atmosphere (15 "C). Ans. t= 0.777 sec.

Students in a physics class were discussing speed of sound in a metal bar and in a tube filled with air. The students made predictions based on the information that shows how the molecules are in different states of matter. SOLID LIQUID GAS Feedbat Which one of the predictions below is correct and why? 4:48 PM SS O 3/31/2021 PrtSc Insert Delete 144 24 FB F9 F10 F11 F12 Backspace Num Lock 9. 7 8. PgUp Home 4. Enter K 2 3 Shift Po End + II P 图 * CO

Constant • Part A At a rock concert, a dB meter registered 128 dB when placed 2.2 m in front of a loudspeaker on the stage. The intensity of the reference level required to determine the sound level is 1.0 x 10-12 W/m2 What was the power output of the speaker, assuming uniform spherical spreading of the sound and neglecting absorption in the air? Express your answer to two significant figures and include the appropriate units. HÀ P = Value Units Submit Previous Answers Reguest Answer « Previous Ne の hp W hp 15 f6 144 F12 f8 f9 f1o insert prt sc & 4. 5. 6. 8. 9. +backspace 人 96

A wave has angular frequency 26.0 rad/s and wavelength 1.40 Im. Part A What is its wave number? Express your answer with the appropriate units. HA Value Units Submit Previous Answers Request Answer

For items 1-2, choose only one correct answer. 1. What is the speed of sound when the temperature is 39°C in aluminum? A. 5119.2 m/s B. 5122.2 m/s C. 5123.4 m/s D. 5127.4 m/s 2. What is the gravitational field strength in N/kg on the surface of the sun? Given: r= 6.96x10^8 m m= 1.99x10^30 kg A. 1.6 B. 9.8 C. 127 D. 274

3 of 6 Question A4 The diagram below shows the dispersion curve for a one-dimensional chain of identical atoms with harmonic forces between nearest neighbours. 2 M -4 -2 0 2 4 k/ů¹ a) Calculate the unit cell parameter of this chain. b) Estimate the speed of sound in this chain. c) Estimate the harmonic spring constant between nearest neighbours, given that the mass of each atom is m = 2 × 10-26 kg.

Problem 1 Given: Deepwater waves.Required:a) Compute the deepwater wavelength and wave celerity for waves with periods of 3, 7, and 11 seconds in both SI and US units. b) Calculate the corresponding minimum water depth for each wave period in a) for validity of the deepwater assumption in both SI and US units.