document.write( "Question 736229: The length l(T)of a bar depends on the temperature T, according to the law
\n" ); document.write( " l(T)=l_o*e^(∝T), where l_o is the length of the bar when T=0 and ∝ is a positive constant. Calculate the percentage change in length when T increases from T=10 to T=80 and ∝=0.001
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Algebra.Com's Answer #449757 by KMST(5328)\"\" \"About 
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\"l%28t%29=l%5B0%5D%2Ae%5E%28alpha%2AT%29\" and with \"alpha=0.001\" \"l%28t%29=l%5B0%5D%2Ae%5E%280.001T%29\"
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\n" ); document.write( "When \"T=10\" \"l%2810%29=l%5B0%5D%2Ae%5E%280.001%2A10%29=l%5B0%5D%2Ae%5E0.01\"
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\n" ); document.write( "When \"T=80\" \"l%2880%29=l%5B0%5D%2Ae%5E%280.001%2A80%29=l%5B0%5D%2Ae%5E0.08\"
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\n" ); document.write( "The relative increase, as a fraction of the size at \"t=10\" is
\n" ); document.write( "\"%28l%2880%29-l%2810%29%29%2Fl%2810%29=l%2880%29%2Fl%2810%29-1=e%5E0.07-1\"= approx. \"1.0725-1=0.0725\"
\n" ); document.write( "That is \"0.0725%2F1=7.25%2F100=7.25\"%
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