document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=190747>Question 190747</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One of the strongest recorded earthquakes to date was in Colombia in 1906 with a Richter scale reading of 9.5. On March 2, 1933, an earthquake with a magnitude 8.9 on the Richter scale struck Japan. How many times more intense was the Colombia earthquake than the Japan earthquake?<BR>\n" );
document.write( "Round-off your answer to the nearest unit.\r<BR>\n" );
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document.write( "Every time I tried doing this question I came up ith a decimal which I rounded up to 1. It just seems wrong. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #143223 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=143223\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> One of the strongest recorded earthquakes to date was in Colombia in 1906 with a Richter scale reading of 9.5. On March 2, 1933, an earthquake with a magnitude 8.9 on the Richter scale struck Japan. How many times more intense was the Colombia earthquake than the Japan earthquake?<BR>\n" );
document.write( "Round-off your answer to the nearest unit.\r<BR>\n" );
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document.write( "dB = 10log[P/Po]<BR>\n" );
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document.write( "If M = 9.5:<BR>\n" );
document.write( "Power = 10^9.5 = 3,162,277,660Po<BR>\n" );
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document.write( "If M = 8.9<BR>\n" );
document.write( "Power = 10^8.9 = 794,328,234.7 Po<BR>\n" );
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document.write( "10^9.5 / 10^8.9 = 3.98107<BR>\n" );
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document.write( "The stronger is almost 4 times stronger than the weaker.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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