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You detect a sound level of 97 db when you are 3m from a

You detect a sound level of 97 dB when you are 3m from a sound source.

a) Calculate the power of the source. Assume it emits sound in all directions uniformly.

b) How far do you need to be from the source so that you can barely hear any sound?

c) How much energy goes into your ear in 4 seconds when you are 2 m from the source? Assume that the radius of the opening into your ear is 0.4 cm.

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Chemistry: You detect a sound level of 97 db when you are 3m from a

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