document.write( "Question 482717: at cruising speed, a car's tire spins a 4,500 revolutions per microsecond; another tire spins at 150 revolutions per nanosecond. Which car tire spins faster. convert both spees to revolutions per second \n" ); document.write( "
Algebra.Com's Answer #330395 by Alan3354(69443)\"\" \"About 
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at cruising speed, a car's tire spins a 4,500 revolutions per microsecond; another tire spins at 150 revolutions per nanosecond. Which car tire spins faster. convert both spees to revolutions per second
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\n" ); document.write( "4500 rev/ms = 4.5E3*1E6 = 4.5E9 rev/sec
\n" ); document.write( "150 rev/ns = 1.5E2*1E9 = 1.5E11 rev/sec = 150E9 rev/sec
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\n" ); document.write( "The 2nd is faster by a factor of 33 (150/4.5)
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\n" ); document.write( "that's some fast rotating, they must be small.
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