Two Sources of Waves, Call Them a and B, Send

question 42

Multiple Choice

Two sources of waves, call them A and B, send out waves across the surface of a lake. The waves from A have crests 1 cm high as measured from the normal undisturbed surface of the water. The waves from B are identical to those from A. How far is the water displaced at a point where a valley from A crosses a valley from B?

• A) 1 cm upward
• B) zero
• C) 1 cm downward
• D) 2 cm downward
• E) 2 cm upward

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Definitions:

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Cover

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