document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=32160>Question 32160</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The electrical resistance, R, of a wire varies directly as its length and inversely as the square of its diameter.  If the resistance of a 100 meter wire having a diameter of 1/2 cm. is 0.75 ohms, find the resistance of a 300 meter wire with a diameter of 1/4 cm. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #18680 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=18680\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> R=k/d^2<BR>\n" );
document.write( "Need to find \"k\".<BR>\n" );
document.write( "0.75=k/(1/2)^2<BR>\n" );
document.write( "0.75(1/4)=k<BR>\n" );
document.write( "k=(3/16)<BR>\n" );
document.write( "EQUATION:<BR>\n" );
document.write( "R=(3/16)/d^2<BR>\n" );
document.write( "If d=1/4 find R.<BR>\n" );
document.write( "R=(3/16)/(1/4)^2<BR>\n" );
document.write( "R=3 ohms<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );