What is one way to increase the amplitude of a wave in a medium?
a. by applying a vibration at the natural frequency of the medium
b. by increasing the velocity of the wave source
c. by moving the source of the wave away from the receptor, or observer
d. by decreasing the frequency of the wave source

Question

What is one way to increase the amplitude of a wave in a medium?
a. by applying a vibration at the natural frequency of the medium 
b. by increasing the velocity of the wave source
c. by moving the source of the wave away from the receptor, or observer 
d. by decreasing the frequency of the wave source

anonymous · Answer

(a) .. that is through Resonance