Answer:
One might think of a plucked guitar string - the sound would depend on the original amplitude of the disturbance -
Speed and velocity would still be the same
(b) is correct because the energy transfer depends on the original energy applied.
When frequency increases, the wavelength halves.
It’s E we just had a test in this and I got it right
Answer:
Explanation:
Given
inclination 
coefficient of kinetic friction 
As crate is moving Down therefore friction will oppose the motion
using FBD






