Your boss asked you to design a room that can be as soundproof as possible and provides you with three samples of material the only information on each samples label is the materials coefficient of absorption the coefficient of absorption listed on sample a is 30% on sample b is 47% and on sample c is 62% when your boss asks for your choice and reasoning behind it what would you tell him

C.62%

Explanation:

The ratio of absorbed sound energy to incident sound energy is called the coefficient of absorption of sounds. ... If 75% of the incident sound is absorbed and the rest 25% is reflected, the sound absorption coefficient of the material is 0.65.

But the coefficient of absorption is directly proportional to sound absorption. So increase in coefficient of absorption increase the sound absorption.

like poles repel so keep pushing north to north and repels funny to see this

c) up is the direction the magnetic force is acting on the charge.