SOLUTION: the wavelength(W) of a radio wave varies inversely as its frequency(F). A wave with a frequency of 200kHz has a length of 252m. What is the length of a wave with a frequency of 900

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Misc -> SOLUTION: the wavelength(W) of a radio wave varies inversely as its frequency(F). A wave with a frequency of 200kHz has a length of 252m. What is the length of a wave with a frequency of 900      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

   

Question 236077: the wavelength(W) of a radio wave varies inversely as its frequency(F). A wave with a frequency of 200kHz has a length of 252m. What is the length of a wave with a frequency of 900kHz?
Answer by Alan3354(6079) About Me  (Show Source):
You can put this solution on YOUR website!
the wavelength(W) of a radio wave varies inversely as its frequency(F). A wave with a frequency of 200kHz has a length of 252m. What is the length of a wave with a frequency of 900kHz?
------------------
200*252 = k (a constant)
L*900 = k = 50400
L = 50400/900 = 56 meters
-----------------
-----------------
That's the answer given the data, but it's not correct.
The wavelength in meters is 300/f, f = frequency in Megahertz.
200 KHz = 0.2 MHz
300/0.2 = 1500 meters,
not 252 meters