A loudspeaker emits a uniform tone in all directions. At 8.00 m away from the loudspeaker, the sound level is 93.0 db. What would the sound level (in dB) be 84.0 m away from the speaker

Iflow from a warmer object to a cooler object until both objects are the same temperature what am i?

Suppose you have three polarizing filters, with the second at an angle of 42∘ to the first and the third at an angle of 90∘ to the first. by what perfect will the original intensity of unpolarized light be reduced to after passing through all three filters?

Asemipermeable membrane is placed between the following solutions. which solution will decrease in volume? solution a: 1.4% (m/v) starch solution b: 7.62% (m/v) starch