If the amplitude of a sound wave is tripled, (a) by what

Chapter 13, Problem 18P

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QUESTION:

Problem 18P

If the amplitude of a sound wave is tripled, (a) by what factor will the intensity increase? (b) By how many dB will the sound level increase?

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QUESTION:

Problem 18P

If the amplitude of a sound wave is tripled, (a) by what factor will the intensity increase? (b) By how many dB will the sound level increase?

ANSWER:

Step 1 of 2

As intensity is directly proportional to the square of the amplitude;

                                                                

Here  is the intensity and is the amplitude.

So by tripling the amplitude intensity will increase by  times the initial value.

                                                               

Therefore tripling the amplitude intensity will increase by  times the initial value.

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