document.write( "Question 726292: This is a trig question about degrees and radians that I don't understand.
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document.write( "A centrifuge is a machine that is used to seperate fluids. In a high school lab, the centrifuge has an angular speed of 400pi radians per second.
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document.write( "A. Find the rotation in revolutions per minute
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document.write( "B. What is the linear speed of a substance that is 8 centimeters away from the center? \n" );
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Algebra.Com's Answer #444843 by lwsshak3(11628) ![]() You can put this solution on YOUR website! A centrifuge is a machine that is used to seperate fluids. In a high school lab, the centrifuge has an angular speed of 400pi radians per second. \n" ); document.write( "*** \n" ); document.write( "A. Find the rotation in revolutions per minute. \n" ); document.write( "400 π radians/sec*revolution/2π radians*60 sec/min \n" ); document.write( "π, sec, radians cancel out, leaving revolution/min \n" ); document.write( "400 π radians/sec*revolution/2π radians*60 sec/min=400*60/2=12000 rev/min \n" ); document.write( ".. \n" ); document.write( "B. What is the linear speed of a substance that is 8 centimeters away from the center? \n" ); document.write( "circumference=2πr=2π*8=16π cm \n" ); document.write( "for each revolution the subtance travels 16π cm \n" ); document.write( "12000 rev/min*16π/rev=192000π cm/min \n" ); document.write( " |