Sound waves travel at 350 m/s through warm air and at 3,500m/s through brass. What happens to the wavelength of a 700 Hz acoustic wave as it enters brass from warm air?

Sound waves travel at 350 m/s through warm air and at 3,500m/s through

1.	Sound waves travel at 350 m/s through warm air and at 3,500m/s through brass. What happens to the wavelength of a 700 Hz acoustic wave as it enters brass from warm air?
Answer» It decreases by a factor of 20 It decreases by a factor of 10 It increase by a factor of 10 It increase by a factor of 20 Solution :In a SINGLE medium, a wave travel a CONSISTENT speed. The frequency does not change, so the wave LENGTH must change (because the wave speed CHANGES.) `lamda_("in BRASS")=(v_("in brass"))/(f)=(10v_("in air"))/(f)=10lamda_("in air")`.

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Sound waves travel at 350 m/s through warm air and at 3,500m/s through brass. What happens to the wavelength of a 700 Hz acoustic wave as it enters brass from warm air?

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