document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=163811>Question 163811</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 #120675 by </B><A HREF=/tutors/aboutme.mpl?userid=vleith><B>vleith(2983)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=vleith><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=120675\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=R+=+%282+G+M+%29%2F+%28c%5E2%29+ ALIGN=MIDDLE  ALT=\"R+=+%282+G+M+%29%2F+%28c%5E2%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "G = gravitational constant <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=6.7x10%5E-11 ALIGN=MIDDLE  ALT=\"6.7x10%5E-11\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "M= mass of the object <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=M+=+2x10%5E30 ALIGN=MIDDLE  ALT=\"M+=+2x10%5E30\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "C = speed of light <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x10%5E8+ ALIGN=MIDDLE  ALT=\"3x10%5E8+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Four variables. Given 3 of them, find the fourth. So plug in using scientific notation and grind it out\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=R+=+%282+%2A+6.7x10%5E-11+%2A+2x10%5E30%29%2F%283x10%5E8%29%5E2 ALIGN=MIDDLE  ALT=\"R+=+%282+%2A+6.7x10%5E-11+%2A+2x10%5E30%29%2F%283x10%5E8%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=R+=+%284+%2A+6.7x10%5E19%29%2F%289x10%5E16%29 ALIGN=MIDDLE  ALT=\"R+=+%284+%2A+6.7x10%5E19%29%2F%289x10%5E16%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=R+=+%2826.8x10%5E3%29%2F9 ALIGN=MIDDLE  ALT=\"R+=+%2826.8x10%5E3%29%2F9\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=R+=+%282.98x10%5E3%29 ALIGN=MIDDLE  ALT=\"R+=+%282.98x10%5E3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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