SAT Subject Physics Practice Question 209: Answer and Explanation

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Question: 209


What is the amplitude of the wave?

A. 0.08 m
B. 0.16 m
C. 0.32 m
D. 0.48 m
E. 0.60 m

Correct Answer: A


The amplitude of a wave is the maximum displacement from equilibrium (the position of zero displacement). Since the distance between the maximum positive displacement and the maximum negative displacement is 0.16 m, the amplitude is half this: 0.08 m.

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