Electromagnetic Waves Problem

  • Thread starter pippermay
  • Start date
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

I am not sure of what to do next to get the correct answer. Please Help.
 
549
1
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..
 

Want to reply to this thread?

"Electromagnetic Waves Problem" You must log in or register to reply here.

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving

Top Threads

Top