document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=436849>Question 436849</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The acoustical intensity, I, of a sound wave is proportional to the square of the pressure amplitude, P, and inversely proportional to the velocity, v, of the wave. If I=0.6W/m^2 for P=30.0Pa and v=150m/s, find v if P=50 Pa and I=2.4W/m^2.\r<BR>\n" );
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document.write( "Please help </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #302360 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=302360\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The acoustical intensity, I, of a sound wave is proportional to the square of<BR>\n" );
document.write( " the pressure amplitude, P, and inversely proportional to the velocity, v, of the wave.<BR>\n" );
document.write( " If I=0.6W/m^2 for P=30.0Pa and v=150m/s, find v if P=50 Pa and I=2.4W/m^2.<BR>\n" );
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document.write( "From the given information we can write a formula:<BR>\n" );
document.write( "I = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28k%2Ap%5E2%29%2Fv ALIGN=MIDDLE  ALT=\"%28k%2Ap%5E2%29%2Fv\"   DISABLED_style= \"max-width:90%; height:auto;\" >, where k is the constant of variation<BR>\n" );
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document.write( "Using the given values, find k:<BR>\n" );
document.write( "\"If I=0.6W/m^2 for P=30.0Pa and v=150m/s<BR>\n" );
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document.write( ".6 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28k%2A30%5E2%29%2F150 ALIGN=MIDDLE  ALT=\"%28k%2A30%5E2%29%2F150\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "150*.6 = 900k<BR>\n" );
document.write( "90 = 900k<BR>\n" );
document.write( "k = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=90%2F900 ALIGN=MIDDLE  ALT=\"90%2F900\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "k = .1 the constant of variation<BR>\n" );
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document.write( "We can write the formula<BR>\n" );
document.write( "I = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.1p%5E2%29%2Fv ALIGN=MIDDLE  ALT=\"%28.1p%5E2%29%2Fv\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "\"find v if P=50 Pa and I=2.4W/m^2.\"<BR>\n" );
document.write( "2.4 = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28.1%2A50%5E2%29%2Fv ALIGN=MIDDLE  ALT=\"%28.1%2A50%5E2%29%2Fv\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
document.write( "2.4v = .1*2500<BR>\n" );
document.write( "v = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=250%2F2.4 ALIGN=MIDDLE  ALT=\"250%2F2.4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "v = 104.167 m/sec </SPAN>\n" );
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