document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1137957>Question 1137957</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The Richter scale measures the energy released at the centre of an earthquake, (intensity)<BR>\n" );
document.write( "of earthquakes and is measured according to the equation\r<BR>\n" );
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document.write( "log10 l/s, and if comparing 2 earthquakes, log l1/l2= log l1/s/l2/s\r<BR>\n" );
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document.write( "where is the intensity of the earthquake and S is the intensity of a standard earthquake<BR>\n" );
document.write( "This is a logarithmic scale which runs from 1 to 9.5, where 7 is 10 times more intense than 6<BR>\n" );
document.write( "and 100 times more intense than 5. In 1964 Alaska had an earthquake with a magnitude of<BR>\n" );
document.write( "9.2 on the Richter scale How many times more intense was the Alaska earthquake than the<BR>\n" );
document.write( "1994 California earthquake which had a magnitude of 6 4 and caused between $15 billion to<BR>\n" );
document.write( "$30 billion in damage and killed 57 people?<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 #755853 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=755853\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> can raise a log to the 10th power to remove it<BR>\n" );
document.write( "so a 9.2 mag earthquake has relative energy of 10^9.2<BR>\n" );
document.write( "the ratio of a 9.2 to a 6.4 is 10^9.2/10^6.4<BR>\n" );
document.write( "This is 630.96 times more intense. </SPAN>\n" );
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