An FM Radio Station Broadcasts at a Frequency of 101.3 MHz. What is The Wavelength?

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A) An FM radio station broadcasts at a frequency of 101.3 MHz. What is the wavelength (m)?

B) What is the frequency (Hz) of a sound source that produces the same wavelength in 20 C air?

Answer: 

A) λ = 2.96 m

B) f = 116 Hz

Explanation

For part A)

The wavelength is calculated as:

For part B)

The speed of sound in air at 20 °C is given as 343 m/s. Hence, the frequency is calculated as:

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