If the frequency of a radio station is 88.1 MHz (8.81 x 107 Hz), what is the wavelength of the wave used by this radio
station for its broadcast? The answer should have three significant figures.
meters

Approximately .

Explanation:

In the earth's atmosphere, the speed of radio waves is very close to that of light in vacuum.

The frequency of a wave gives the number of cycles in unit time. That's the same as the number of wavelengths that this wave covers in unit time.

In this question, . In other words, in each second, this wave would travel a distance that's equal to   times its wavelength.

Let represent the wavelength of this wave.

.

Hence the equation:

.

.

(Rounded to three significant figures.)

In general, if a wave has speed and frequency , then its wavelength would be:

.

answer: option c.

explanation: