18. A sound wave s(r, t) = sm Cos(ka – wt +o) travels at 343 m/s through air in a long horizontal tube. At one instant, air molecule A at r = 2.00 m is at its maximum positive displacement of 6.0 nm and air molecule B at r = a positive displacement of 1.5 nm. All the molecules between A and B arc at intermediate displacements. What is the 2.05 m is at frequency of the wave? (1) 1400 Hz (2) 1300 Hz (3) 1200 Hz (4) 1100 Hz (5) 1000 Hz

18. A sound wave s(r, t) = sm Cos(ka – wt +o) travels at 343 m/s through air in a long horizontal tube. At one instant, air molecule A at r = 2.00 m is at its maximum positive displacement of 6.0 nm and air molecule B at r = a positive displacement of 1.5 nm. All the molecules between A and B arc at intermediate displacements. What is the 2.05 m is at frequency of the wave? (1) 1400 Hz (2) 1300 Hz (3) 1200 Hz (4) 1100 Hz (5) 1000 Hz

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

See similar textbooks

Similar questions

A bat emits a sound whose frequency is 83.2 kHz83.2 kHz. The speed of sound in air at 20.0o C is 343 m/s. However, the air temperature is 40.5o C, so the speed of sound is not 343 m/s. Assume that air behaves like an ideal gas, and find the wavelength of the sound.
Two waves are described by the wave functions y1(x,t) =(5.0m)sin(2.0x-10t) , and y2(x,t)=(5.0m)cos(2.0x-10t),where y1 and y2 are in meters and t is in seconds. Determine the amplitude and phase for the wave resulting from the superposition of the two waves.
A string exactly 2 meters long has a mass of 10.0 g and is under a tension of 12.5 N. The speed of a transverse wave in this string is O 25.0 m/s. O 50.0 m/s. O 1.58 m/s. O 44.7 m/s. O 15.8 m/s.
Dolphins make sounds in air and water. What is the ratio of the wavelength of a sound in air to its wavelength in seawater? Assume air temperature is 20.0C.
A sunbather stands waist deep in the ocean and observes that seven crests of periodic surface waves pass each minute. The crests are 33.43 meters apart. What are the wavelength (in m), frequency (in Hz), period (in s), and speed (in m/s) of the waves? wavelength 33.43 frequency 0.11 9.09 303.90 period speed ✔m xHz X S x m/s
1. The equation of certain traveling waves is y(x,t) = 0.0450 sin(25.12x - 37.68t - 0.523)where x and y are in meters, and t in seconds. Determine the velocity of a particle that is at x=3.50m from the origin at t=21.0s
two harmonic waves are described by y1 = (6.00cm)sin(pi (2.00x/m + 3.00t/s)) y2 = (6.00cm)sin(pi (2.00x/m - 3.00t/s)) What is the magnitude of the displacement (in cm) of this wave at x=3 cm and t=5 sec ? answer: 2.25
A violin string is 25cm long. It sounds the musical note A (440Hz) when played without fingering. It is known that the mass of the string is 3.50x10^-4 kg. a. What is the tension in the string in Newtons?
In longitudinal mechanical waves, compressions are the regions of O a. high particle density, low air pressure Ob. low particle density, low air pressure c. low particle density high air pressure c high partice density high air pressure
On a warm summer day (33 ∘C), it takes 4.90 s for an echo to return from a cliff across a lake. On a winter day, it takes 5.30 s . The speed of sound in air is v≈(331+0.60T)m/s, where T is the temperature in ∘C. What is the temperature on the winter day?
and 4.00 m from the other? Ans. 4.1 rad 7. A bat flies toward a wall at a speed of 5.0 m/s. As it flies, the bat emits an ultrasonic sound wave with frequency 30 kHz. What frequency does the bat hear in the reflected wave? 8 The solution of travelling wave v(cos(kx - wt) is Ans. 30,888 kHz w²0²y a²y
N=99