Physics, 11.01.2020 23:31 operrt

Your boss asks 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 sample's label is the material's 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 the reasoning behind it, what would you tell him?
a. sample c would be best, because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the largest.
b. sample a would be best, because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the largest.
c. sample c would be best, because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the smallest.
d. sample a would be best, because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the smallest.

Answers: 1

Show answers

Other questions on the subject: Physics

Physics, 21.06.2019 21:00, liluv5062

50 g of ice at 0°c is dropped in a beaker containing 100 g of water at 0°c. what will be the contents of the beaker after 5 hours? assume that the room temperature is 0°c.

Answers: 1

continue

Physics, 21.06.2019 21:30, Nibiskadhungana

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

Answers: 1

continue

Physics, 21.06.2019 22:30, jasoncarter

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

Answers: 1

continue

Physics, 22.06.2019 00:00, cchsemily7210

A1000-kg weather rocket is launched straight up. the rocket motor provides a constant acceleration for 16-s, then the motor stops. the rocket altitude 20-s after launch is 510-m. you can ignore any effects of air resistance. a. what was the rocket’s acceleration during the first 16-s? b. what is the rocket’s speed as it passes through a cloud 5100-m above the ground?

Answers: 1

continue

You know the right answer?

Your boss asks you to design a room that can be as soundproof as possible and provides you with thre...