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)![]() ![]() You can put this solution on YOUR website! 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( "--------------- \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 \n" ); document.write( "------------------- \n" ); document.write( "The 2nd is faster by a factor of 33 (150/4.5) \n" ); document.write( "----------- \n" ); document.write( "that's some fast rotating, they must be small. \n" ); document.write( " \n" ); document.write( " |