document.write( "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? \n" ); document.write( "
Algebra.Com's Answer #173961 by Alan3354(69443)![]() ![]() 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? \n" ); document.write( "------------------ \n" ); document.write( "200*252 = k (a constant) \n" ); document.write( "L*900 = k = 50400 \n" ); document.write( "L = 50400/900 = 56 meters \n" ); document.write( "----------------- \n" ); document.write( "----------------- \n" ); document.write( "That's the answer given the data, but it's not correct. \n" ); document.write( "The wavelength in meters is 300/f, f = frequency in Megahertz. \n" ); document.write( "200 KHz = 0.2 MHz \n" ); document.write( "300/0.2 = 1500 meters, \n" ); document.write( "not 252 meters \n" ); document.write( " |