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The threshold of hearing is defined as the minimum discernible intensity of the sound. It is approximately 10?12W/m2. Find the distance d from the car at which the sound from the stereo can still be discerned. Assume that the windows are rolled down and that each speaker actually produces 0.06 W of sound, as suggested in the last follow-up comment.Express your answer numerically in meters.



Answer :

The distances d from the car, in meters, at which it is still possible to hear the stereo sound is 97720.5m

what is distance?

Distance is an object's overall movement, regardless of direction. Distance can be characterized as the quantity of ground covered, regardless of the starting or finishing points of an object.

Briefing:

Sound intensity heard at distance is related to the distance with the relation = (power of sound at the source)/(surface area of the wall of an imaginary sphere at the distance in question)

I = P/4πd²

Assuming the car has 2 speakers,

P = 0.06 W × 2 = 0.12 W

d = ?

I = 10⁻¹² W/m²

10⁻¹² = 0.12/4πd²

d = 97720.5 m

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