Two Speakers Emit Coherent Sound Waves into the Open Air

question 54

Multiple Choice

Two speakers emit coherent sound waves into the open air.One of them produces 75 W of power.If a microphone placed at 12 m from each of the two speakers receives a total intensity of 0.25 W/m²,what is the power output of the second speaker?

• A) 151 W
• B) 377 W
• C) Need more info to solve.
• D) 38 W

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Definitions:

Numerator

The number above the division line in a fraction. The numerator is also known as the dividend.

Fraction

A numerical quantity that is not a whole number, representing a part of a whole.

Evaluate

To calculate the value of an expression or assess the significance of something in a given context.

Fraction

A mathematical expression representing a part of a whole, typically written with a numerator and a denominator.