Question

Which amplitude of the following longitudinal waves has the greatest energy?

Answer 1

Which amplitude of the following longitudinal waves has the greatest energy?

amplitude = 10 cm; wavelength = 6 cm; period = 4 seconds

Answer 2

Answer: A longitudinal wave has the greatest energy for amplitude 10 cm.

Explanation:

We know that,

The energy is directly proportional to the square of the amplitude.

$E \propto a^2$

(I). Amplitude = 10

then, the energy will be

$E = 100$

(II). Amplitude = 6

then, the energy will be

$E = 36$

(II). Amplitude = 4

then, the energy will be

$E = 16$

Hence,  A longitudinal wave has the greatest energy for amplitude 10 cm.