Asked by ANA
Please can anyone explain. Thank you.
A rocket is launched vertically from ground with a constant acceleration. If the rocket emits a burst of sound every five seconds after launching, find the difference of intensity levels observed at the launching site for the first and the second bursts of sound.
A rocket is launched vertically from ground with a constant acceleration. If the rocket emits a burst of sound every five seconds after launching, find the difference of intensity levels observed at the launching site for the first and the second bursts of sound.
Answers
Answered by
bobpursley
v=at so velocity is increasing linearly. So at time 1, v=5a, distance=v*t=25a
at time 2, v=10a, and distance=100a
so the distance is 4x as far, so the sound diminished as the square of the diatnace, so intensity is 1/16..
at time 2, v=10a, and distance=100a
so the distance is 4x as far, so the sound diminished as the square of the diatnace, so intensity is 1/16..
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