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 smallest. 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 smallest. c. 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. d. 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.
Answers: 1
Physics, 22.06.2019 10:00, chaseashley24
** urgent** the voltage across the primary winding is 350,000 v, and the voltage across the secondary winding is 17,500 v. if the secondary winding has 600 coils, how many coils are in the primary winding? a- 30 coilsb- 583 coilsc- 12,000 coilsd- 332,500 coils
Answers: 1
Physics, 22.06.2019 10:20, yofavvlele
Assume that a person skiing high in the mountains at an altitude of h = 15100 ft takes in the same volume of air with each breath as she does while walking at sea level. determine the ratio of the mass of oxygen inhaled for each breath at this high altitude compared to that at sea level. assume that the air composition (i. e. % of air that is oxygen) is the same at sea level as it is at 15100 ft.
Answers: 2
Physics, 22.06.2019 10:40, corrineikerd
When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is
Answers: 2
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