document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=212765>Question 212765</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use formula L=10*log I/Io, where the loudness of a sound in decibels is determined by I, the number of watts per square meter produced by the soundwave, and Io=10^-12 w/m^2. A certain noise produces 6.2 x 10^-4 w/m^2 of power. What is the decibel level of this noise? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #160703 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=160703\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Use formula L=10*log I/Io, where the loudness of a sound in decibels is determined by I, the number of watts per square meter produced by the soundwave, and Io=10^-12 w/m^2. A certain noise produces 6.2 x 10^-4 w/m^2 of power. What is the decibel level of this noise?<BR>\n" );
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document.write( "L = 10*log(6.2E-4/1E-12)<BR>\n" );
document.write( "L = 10*log(6.2E08)<BR>\n" );
document.write( "L = 87.9239 dB<BR>\n" );
document.write( "L ~ 88 dB </SPAN>\n" );
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