document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=182624>Question 182624</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The Schwarzschild radius describes the critical value to which the radius of a massive body must be reduced for it to become a black hole. \r<BR>\n" );
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document.write( "R = 2 G M / c^2 \r<BR>\n" );
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document.write( "where \r<BR>\n" );
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document.write( "G = gravitational constant 6.7x10^-11 \r<BR>\n" );
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document.write( "M= mass of the object \r<BR>\n" );
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document.write( "C = speed of light 3x10^8 \r<BR>\n" );
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document.write( "The sun has M = 2x10^30 . What is the Schwarzschild radius for the sun? [Note its true radius is 700,000.] <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 #137099 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=137099\">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( "Just plug in the values for G, M, and c and do the arithmetic.  Remember your rules for exponents:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \text{          }\math (a^n)(a^m) = a^{n + m}\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \text{          }\math \frac{a^n}{a^m} = a^{n - m}\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \text{          }\math (a^n)^m = a^{nm}\">\r<BR>\n" );
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document.write( "Hint:  Gather all the significant figure numbers and do that arithmetic and then use the exponent rules to determine the appropriate power of 10 to apply to that answer.\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" );
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