document.write( "Question 821281: The electrical resistance of a wire varies directly as its length and inversely as the square of its diameter. A wire with a length of 200 inches and a diameter of 1/4 inch has a resistance of 20 ohms. Find the electrical resistance in a 600 inch wire with the same diameter. \n" ); document.write( "
Algebra.Com's Answer #494089 by rfer(16322)\"\" \"About 
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20/200=x/600
\n" ); document.write( "200x=12000
\n" ); document.write( "x=60 ohms
\n" ); document.write( "Diameter stays the same so just the length changes
\n" ); document.write( "so it is just a linear relationship.
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