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variation at a point 2 meters away from a gramophone playing music is ∆?max=0.02Pa

- November 14, 2022 - Edwin Tunner

The amplitude of acoustic pressure variation at a point 2 meters away from a
gramophone playing music is ∆?max=0.02Pa
 The density of air is 1.2 kg/m3 
, and the speed of sound is v = 343 m/s.
a) What is the sound intensity at that point?
b) What is the sound level?
c) Assuming that the gramophone emits sound as a point source, what is the
power output of the source?

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