document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1139307>Question 1139307</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A team of archaeologists recovered wooden artifacts believed to be 40000 yrs old. How much carbon-14 has been lost from wood.\r<BR>\n" );
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document.write( "please show work </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #757105 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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/cgi-bin/show-face.mpl?user=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=757105\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A team of archaeologists recovered wooden artifacts believed to be 40000 yrs old. How much carbon-14 has been lost from wood. <BR>\n" );
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document.write( "The half-life of carbon 14 is 5730 yrs. assume 100 units of wood<BR>\n" );
document.write( "A = 100 * 2^(-40000/5730)<BR>\n" );
document.write( "A = 100 * .007917<BR>\n" );
document.write( "A = .79% remains<BR>\n" );
document.write( "therefore<BR>\n" );
document.write( "100 -.79 ~ 99.2% has been lost in 40000 years </SPAN>\n" );
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