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SAT® Subject Test in Physics

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Resonating with a Tuning Fork

SATPHY-NXEGYK

The air tube pictured below is 2.0 meters long.

If the speed of sound in the tube is $345\ m/s$, what is the frequency of the tuning fork producing resonance in the tube if the pictured wave pattern represents the standing wave?

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A

$99\ Hz$

B

$173\ Hz$

C

$302\ Hz$

D

$345\ Hz$

E

$690\ Hz$