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Waves

Quick practice

Question 1 of 5

Sound waves travel at 350 m/s through warm air and at 3500 m/s through brass. The wavelength of a 700 Hz acoustic wave as it enters brass from warm air:

A

decreases by a factor 20

B

increases by a factor 10

C

decreases by a factor 10

D

increases by a factor 20

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