document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=947676>Question 947676</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A thermometer reading 35 degrees F is brought into a room with a constant temperature of 75 degrees F. If the thermometer reads 42 degrees after 5 minutes, what will it read after being in the room for 8 minutes? Assume the cooling follows Newton's Law of Cooling: U=T+(Uo-T)e^kt </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #578308 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39616)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=578308\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Many people may not know what the variables mean.\r<BR>\n" );
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document.write( "Most of the way down in the article:<BR>\n" );
document.write( "http://en.wikipedia.org/wiki/Convective_heat_transfer#Newton.27s_law_of_cooling\r<BR>\n" );
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document.write( "Refering to the equation you presented,<BR>\n" );
document.write( "U, temperature after time t<BR>\n" );
document.write( "T, temperature of the environment<BR>\n" );
document.write( "Uo, temperature initially<BR>\n" );
document.write( "t, amount of time passage.<BR>\n" );
document.write( "The exponent should be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=kt ALIGN=MIDDLE  ALT=\"kt\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "The data in problem description:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%2842=75%2B%2835-75%29e%5E%28k%2A5%29%29 ALIGN=MIDDLE  ALT=\"highlight_green%2842=75%2B%2835-75%29e%5E%28k%2A5%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >;<BR>\n" );
document.write( "Check to see that each given value is in the correct place for its meaning.  This equation will allow you to solve for k.  \r<BR>\n" );
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document.write( "Once k is found, you have a model more like:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=U=75%2B%2835-75%29e%5E%28k%2A8%29 ALIGN=MIDDLE  ALT=\"U=75%2B%2835-75%29e%5E%28k%2A8%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "but now you would have found k and can evaluate U. </SPAN>\n" );
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