document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1124982>Question 1124982</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The loudness of sound is measured in units called decibels. The decibel rating of a sound is given by<BR>\n" );
document.write( "D(i) = 10.log(i/i0)\r<BR>\n" );
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document.write( "Where i is the intensity of the sound and i0 is the minimum intensity detectable by the human ear (the so-called threshold sound). Find the decibel rating, round answers to the nearest whole number.\r<BR>\n" );
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document.write( "Whisper, 115i0  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #741394 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=741394\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The loudness of sound is measured in units called decibels.<BR>\n" );
document.write( " The decibel rating of a sound is given by<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%28I%29+=+10%2Alog%28I%2FIo%29 ALIGN=MIDDLE  ALT=\"D%28I%29+=+10%2Alog%28I%2FIo%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "Where I is the intensity of the sound.<BR>\n" );
document.write( " and Io is the minimum intensity detectable by the human ear (the so-called threshold sound).<BR>\n" );
document.write( " Find the decibel rating, round answers to the nearest whole number. <BR>\n" );
document.write( "Whisper, 115Io <BR>\n" );
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document.write( "Io = the threshold of sound is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=10%5E%28-12%29 ALIGN=MIDDLE  ALT=\"10%5E%28-12%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > W/m^2 (watts per square meter)<BR>\n" );
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document.write( "Since Io is in the numerator and denominator it's just:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D%28I%29+=+10%2Alog%28115%29 ALIGN=MIDDLE  ALT=\"D%28I%29+=+10%2Alog%28115%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "D(I) = 10*2.06<BR>\n" );
document.write( "D(I) = 20 db </SPAN>\n" );
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