Question

1). You drop a stone from rest into a well that is 5.2m deep. How long does it take before you hear the splash?

2). A street musician sounds the A string of his violin, producing a tone of 440 Hz, What frequency does a bicyclist hear as he a) approaches and b) recedes from the musician with a speed of 11.0 m/s?

3). One of the harmonics on a string 1.30m long has a frequency of 15.60 Hz. The next higher harmonic has a frequency of 23.40 Hz. Find a) the fundamental frequency, and b) the speed of the waves on the string.

4). Consider a wave on a string with constant tension. If the frequency of the wave is doubled, by what multiplicative factor does a) the speed and b) the wavelength change?

Answer 1

Note-In question (1) and (2) velocity of sound is not given so it is taken as 344m/s(which is generally taken).