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Finding frequencies and wavelengths

Hey! I'm struggling really badly with some physics homework, we've done nothing on this stuff in class and I can't find ANY help online and I'm stressing pretty bad right now so ANY help would be AMAZING!

Here's my questions...

"This question is about electromagnetic waves travelling in free space:
(a) Find the frequency of a wave where the wavelength = 1cm
(b) Find the wavelength of a wave with a frequency of 100 MHz
(c) Find the wavelength of a wave with a frequency of 300 MHz"

I assure you I have tried for HOURS to get my head around these I just can't and am desperate for some help!
Thank you SO much in advance!
 
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Hey! I'm struggling really badly with some physics homework, we've done nothing on this stuff in class and I can't find ANY help online and I'm stressing pretty bad right now so ANY help would be AMAZING!

Here's my questions...

"This question is about electromagnetic waves travelling in free space:
(a) Find the frequency of a wave where the wavelength = 1cm
(b) Find the wavelength of a wave with a frequency of 100 MHz
(c) Find the wavelength of a wave with a frequency of 300 MHz"

I assure you I have tried for HOURS to get my head around these I just can't and am desperate for some help!
Thank you SO much in advance!
pl. show what you have done to solve the problem....
you must have read about electromagnetic waves or simply waves moving in space or a medium.
what is wavelength ?
what is called frequency of a wave?
and how the wavelength and frequency gets related -through some other constant of the wave?
 

CWatters

Science Advisor
Homework Helper
Gold Member
10,528
2,292
+1

You appear to be missing just one equation that relates frequency, velocity and wavelength. Look it up.
 

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