Question

The following question is in the category of Physics under Light and SoundYour boss asks you to design a room to 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%. Which material would you recommend and why?A.) Sample C, because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the largestB.) Sample C, because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the smallestC.) Sample A, because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the smallestD.) Sample A, because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the largest

Answer 1

Given:

Three types of materials A, B, and C are there.

The coefficient of absorption of A is 30 %, B is 47 %, and C is 62 %.

To find:

Which material would you recommend and why?

Step-by-step explanation:

Soundproofing is usually achieved by using materials that absorbed or reduce sounds. The coefficient of absorption of a material refers to that material's ability to absorb sound. The higher the percentage of a material absorption coefficient, the better the material's ability to absorb sound.

Hence, the material with a 62 % absorption coefficient that is Sample C has the greatest ability of the three materials to absorb sound effectively.

B) Sample C, because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the small

Answer 2

Given:

Three types of materials A, B, and C are there.

The coefficient of absorption of A is 30 %, B is 47 %, and C is 62 %.

To find:

Which material would you recommend and why?

Explanation:

Soundproofing is usually achieved by using materials that absorbed or reduce sounds. The coefficient of absorption of a material refers to that material's ability to absorb sound. The higher the percentage of a material absorption coefficient, the better the material's ability to absorb sound.

Hence, the material with a 62 % absorption coefficient that is Sample C has the greatest ability of the three materials to absorb sound effectively.

B) Sample C, because the percentage of the energy in an incident wave that remains in a reflected wave from this material is the smallest.