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.

Question

08-12-2022
Physics

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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.

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Riya99 Riya99 · Answer 1 · 2022-12-14T21:44:37-05:00

the distances d from car that the stereo's sound can still be 97720.5 m Then, we need to determine how much further away it is in order to calculate its actual size. An thing appears smaller from a distance.

What do you call a distance?

Distance, which is a scalar quantity, describes "however much area an entity has covered" while moving. An object's total change in position, or displacement, is a vector number that indicates "how out of place any object is."

The relationship between distance and sound intensity heard at a distance is (the power of sound just at source surface area of a wall of an imagined circle at the range in question).

I = P/4πd²

P = 0.06 W 2 = 0.12 W d = if the vehicle has two speakers.

I = 1012 W/m2 1012 = 0.12/4 d2 d = 97720.5 m is the formula for the loudest audible sound.

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