Amateur radio operators in the United States can transmit on several bands. One of those bands consists of radio waves with a wavelength near 15.m. Calculate the frequency of these radio waves. Round your answer to 2 significant digits.

20 MHz

Explanation:

Since speed of radio waves = speed of light = c and for a wave, v = fλ where v = speed of wave, f = frequency and λ = wavelength.

Given that λ = 15 m and v = c = 3 × 10⁸ m/s

f = v/λ

substituting the values of the variables into the equation, we have

f = v/λ = 3 × 10⁸ m/s ÷ 15 m

= 0.2 × 10⁸ Hz

= 2 × 10⁷ Hz

= 20 × 10⁶ Hz

= 20 MHz

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