# Electromagnetic Waves Problem

#### pippermay

Hi,

Can someone help me on the following problem:

Suppose you are located 180 m from a radio transmitter. How many wavelengths are you from the transmitter if the station calls itself 1147 AM? (The AM band frequencies are in kilohertz.)

I have used the following equation to find the wavelength:

c = (wavelength) (frequency)

wavelength = c / frequency
wavelength = (3.0e8) / (1.147e6)
wavelenght = 261.6

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#### Nylex

Firstly, that wavelength is missing its units. Secondly, all you need to do is a simple division to work out how many wavelengths are in 180 m. You should be able to see straight off that it's going to be less than 1..

"Electromagnetic Waves Problem"

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