document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=586574>Question 586574</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (1)The half-life of Palladium-100 is 4 days. After 20 days a sample of Palladium-100 has been reduced to a mass of 2 mg. What was the initial mass (in mg) of the sample?<BR>\n" );
document.write( "What is the mass 4 weeks after the start?\r<BR>\n" );
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document.write( "(2)A wooden artifact from an ancient tomb contains 50 percent of the carbon-14 that is present in living trees. How long ago was the artifact made? (The half-life of carbon-14 is 5730 years.)<BR>\n" );
document.write( "Your answer is how many years. \r<BR>\n" );
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document.write( "(3)At the beginning of an experiment, a scientist has 196 grams of radioactive goo. After 270 minutes, her sample has decayed to 3.0625 grams.\r<BR>\n" );
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document.write( "What is the half-life of the goo in minutes?\r<BR>\n" );
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document.write( "Find a formula for G(t), the amount of goo remaining at time t. G(t) =\r<BR>\n" );
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document.write( "How many grams of goo will remain after 38 minutes? \r<BR>\n" );
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document.write( "(4)The decibel level of a sound is given by dB = 10log(\frac{E}{E_0}), where E_0 = 10^{-12} \: \frac{\text{watts}}{m^2} and E is the intensity of the sound.\r<BR>\n" );
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document.write( "(a) Find the intensity of a 120-decibel sound.<BR>\n" );
document.write( "E = watts per square meter.\r<BR>\n" );
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document.write( "(b) How many times more intense is the sound from (a) than a 60-decibel sound?<BR>\n" );
document.write( "A sound at 120 decibels is times more intense than a sound at 60 decibels. \r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #373808 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=373808\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Times New Roman\" size=\"+2\">\r<BR>\n" );
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document.write( "Ask your Physics questions on a Physics Homework Help site.  Try Cramster.\r<BR>\n" );
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document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi} + 1 = 0\"><BR>\n" );
document.write( "My calculator said it, I believe it, that settles it<BR>\n" );
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