Which sound would be louder?

a. a wave with an amplitude of 1.0
b. a wave with an amplitude of 0.1
c. a wave with an amplitude of 0
d. a wave with an amplitude of 0.5

A. a wave with an amplitude of 1.0

Explanation:

The intensity (and therefore the loudness) of a sound wave is proportional to the amplitude of the wave itself: the larger the amplitude, the louder the sound, and the smaller the amplitude, the weaker the sound.

In this problem, we are given 4 different waves with different amplitudes. Among the choices, we see that wave A has the largest amplitude (1.0), therefore this will be the wave with greatest intensity, so the loudest sound wave among the choices.

c

explanation:

true tan speed = ang vel x radius