document.write( "Question 956578: A car has wheels with a radius if 42.0 cm. If the car is travelling at a speed of 90.0 km/h, what is the frequency of rotation of its wheels? \n" ); document.write( "

Algebra.Com's Answer #584395 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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A car has wheels with a radius if 42.0 cm.
\n" ); document.write( "Find the circumference of the the wheel
\n" ); document.write( " $\"C+=+2%2Api%2A42\"$
\n" ); document.write( "C = 263.89 cm
\n" ); document.write( "convert to meters
\n" ); document.write( "263.89/100 = 2.6389 meters
\n" ); document.write( ":
\n" ); document.write( " If the car is travelling at a speed of 90.0 km/h, what is the frequency of rotation of its wheels?
\n" ); document.write( "Find the speed in meters/sec
\n" ); document.write( " $\"%2890%2A1000%29%2F3600\"$ = 25 m/sec
\n" ); document.write( ":
\n" ); document.write( " $\"25%2F2.6389\"$ = 9.4736 rev/sec \n" ); document.write( "

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