document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=52511>Question 52511</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help!!!, I don't understand what the instructor is asking for.\r<BR>\n" );
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document.write( " What is the formula for measuring sound. <BR>\n" );
document.write( "Pick a specific sound, give the decibels of the sound, and explain what this measurement means </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #35061 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><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=35061\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Sound intensity(loudness) is measured on a logrithmic scale.<BR>\n" );
document.write( "dB = 10 log (I / Io)<BR>\n" );
document.write( "I = intensity of sound (joules per second per m^2)<BR>\n" );
document.write( "Io = softess sound a human can hear (10^-12)<BR>\n" );
document.write( "A thunder clap: I = 10^0 = 1<BR>\n" );
document.write( "dB = 10 log(1/10^(-12))<BR>\n" );
document.write( "dB = 10 log(10^12)<BR>\n" );
document.write( "dB = 10 (12) = 120 </SPAN>\n" );
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