document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1137719>Question 1137719</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The power, P (watts), of a car engine is proportional to the square of its speed, k (m/s).<BR>\n" );
document.write( "When k=35, P=2200.<BR>\n" );
document.write( "Work out the power (to 1DP) when the speed is 40m/s\r<BR>\n" );
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document.write( "Please could you help me with this question. I have tried but I just really do no understand it. When I tried I got the answer of 0.6 watts. The site called Hegartymaths told me that it was incorrect and the video it comes with is not very understandable for me. \r<BR>\n" );
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document.write( "Thank You. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #755575 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20849)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=755575\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "The power, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P ALIGN=MIDDLE  ALT=\"P\"   DISABLED_style= \"max-width:90%; height:auto;\" > (watts), of a car engine is proportional to the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=square ALIGN=MIDDLE  ALT=\"square\"   DISABLED_style= \"max-width:90%; height:auto;\" > of its speed, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k%28m%2Fs%29 ALIGN=MIDDLE  ALT=\"k%28m%2Fs%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >; it means if you have two different powers and speeds, you will have a proportion\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%3Ak%5E2=P%5B1%5D%3Ak%5B1%5D%5E2 ALIGN=MIDDLE  ALT=\"P%3Ak%5E2=P%5B1%5D%3Ak%5B1%5D%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > or\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%2Fk%5E2=P%5B1%5D%2Fk%5B1%5D%5E2 ALIGN=MIDDLE  ALT=\"P%2Fk%5E2=P%5B1%5D%2Fk%5B1%5D%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "When given:<BR>\n" );
document.write( " <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=35 ALIGN=MIDDLE  ALT=\"k=35\"   DISABLED_style= \"max-width:90%; height:auto;\" >, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=2200 ALIGN=MIDDLE  ALT=\"P=2200\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Work out the power <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%5B1%5D ALIGN=MIDDLE  ALT=\"P%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" > (to 1DP) when the speed is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k%5B1%5D=40%28m%2Fs%29 ALIGN=MIDDLE  ALT=\"k%5B1%5D=40%28m%2Fs%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "so,\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P=2200 ALIGN=MIDDLE  ALT=\"P=2200\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k=35 ALIGN=MIDDLE  ALT=\"k=35\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=k%5B1%5D=40 ALIGN=MIDDLE  ALT=\"k%5B1%5D=40\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "and you need <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%5B1%5D ALIGN=MIDDLE  ALT=\"P%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2200%2F35%5E2=P%5B1%5D%2F40%5E2 ALIGN=MIDDLE  ALT=\"2200%2F35%5E2=P%5B1%5D%2F40%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2200%2F1225=P%5B1%5D%2F1600 ALIGN=MIDDLE  ALT=\"2200%2F1225=P%5B1%5D%2F1600\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.79592=P%5B1%5D%2F1600 ALIGN=MIDDLE  ALT=\"1.79592=P%5B1%5D%2F1600\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1.79592%2A1600=P%5B1%5D ALIGN=MIDDLE  ALT=\"1.79592%2A1600=P%5B1%5D\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=P%5B1%5D=2873.5 ALIGN=MIDDLE  ALT=\"P%5B1%5D=2873.5\"   DISABLED_style= \"max-width:90%; height:auto;\" > watts\r<BR>\n" );
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document.write( " </SPAN>\n" );
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