Two tuning forks A and B give 5 beats. A resounds with a closed column of air 15 cm long and B with an open column of ar 30.5 cm long. Caluculate their frequencies. Negelct and correction.

A SONAR system fixed in a submarine operates at a frequency 40.0 KHz. An enemy submarine of 360 km/h. What is the frequency of sound reflected by the submarine? Take the speed of sound in water to be 1450 \({ ms }^{ -1 }\)

For the harmonic travelling wave  \(y=2\cos { 2\pi } \left( 10t-0.0080x+3.5 \right) \) , where, x and y are in cm and t is in second. What is the phase difference between the oscillatory motion at two points separated by a distance of \(\frac { \lambda }{2 } \).

For the harmonic travelling wave \(y=2\cos { 2\pi } \left( 10t-0.0080x+3.5 \right) \), where, x and y are in cm and t is in second. What is the phase difference between the oscillatory motion at two points separated by a distance of What is the phase difference between the oscillation of a particle located at x=100 cm, at t=Ts and t = 5s?

Explain why (or how) bats can ascertain distance, directions, nature and sizes of the obstacles without any eyes?

Explain why (or how) Solids can support both longitudinal and transverse waves but only longitudinal waves can propagate in gases.

In the given progressive wave,  Where, y and x are in m,t is in seconds. What is the wavelength?

The transverse displacement of a string (clamped at its two ends) is given by \(y(x,t)=0.06 sin \frac{2\pi}{3} x cos (120 \pi t)\) where x, yare in m and t in s. The length of the string is 1.5 m and its mass is 3 x 10^-2 kg.
Answer the following :
(a) Does the function represent a travelling wave or a stationary wave?
(b) Interpret the wave as a superposition of two waves travelling in opposite directions. What is the wavelength, frequency, and speed of each wave ?
(c) Determine the tension in the string

What are the characteristics of stationary waves? Distinguish between stationary waves and progressive waves.