document.write( "Question 63806: THE AMOUNT OF A RADIOACTIVE TRACER REMAINING AFTER t DAYS IS GIVEN BY A=Ao e-0.058t, WHERE Ao IS THE STARTING AMOUNT AT THE BEGINNING OF THE TIME PERIOD. HOW MANY DAYS WILL IT TAKE FOR ONE HALF OF THE ORIGINAL AMOUNT TO DECAY? \n" ); document.write( "

Algebra.Com's Answer #44572 by venugopalramana(3286) $\"\"$ $\"About$

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THE AMOUNT OF A RADIOACTIVE TRACER REMAINING AFTER t DAYS IS GIVEN BY A=Ao e-0.058t, WHERE Ao IS THE STARTING AMOUNT AT THE BEGINNING OF THE TIME PERIOD. HOW MANY DAYS WILL IT TAKE FOR ONE HALF OF THE ORIGINAL AMOUNT TO DECAY?
\n" ); document.write( "AT HALF LIFE A =A0/2..HENCE
\n" ); document.write( "A0/2=A0
\n" ); document.write( "E^(-0.58T)=1/2
\n" ); document.write( "OR
\n" ); document.write( "E^0.58T=2
\n" ); document.write( "0.58T=LN(2)
\n" ); document.write( "T=LN(2)/0.58=1.195081=1.2 DAYS \n" ); document.write( "

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