document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1017351>Question 1017351</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, I am having trouble working out this question, help would be much appreciated.\r<BR>\n" );
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document.write( "An electrically charged particle generates an electric field around it. The strength, E, of the electric field (in NC^-1) is directly proportional to the size of the charge of the particle, Q (in Coulombs, C), and inversely proportional to the square of the distance from it, d in metres.\r<BR>\n" );
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document.write( "(i). Set up  the proportionality relationship\r<BR>\n" );
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document.write( "This is what I think the formula is but not sure if it is correct?\r<BR>\n" );
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document.write( "E (NC^-1)= k * (Q/D^2)\r<BR>\n" );
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document.write( "And then theirs question (ii)\r<BR>\n" );
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document.write( "(ii). Find the constant of proportionality if the electric field  strength 3.00 cm from a 3.5 uC charge is 3.5 x 10^7 NC^-1\r<BR>\n" );
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document.write( "This is what I've worked out so far not sure if it is correct though?\r<BR>\n" );
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document.write( "3.5 * 10^7 = K * Q/(0.03)^2<BR>\n" );
document.write( "3.5 * 10^7 = K * Q/(0.09) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #638086 by </B><A HREF=/tutors/aboutme.mpl?userid=rothauserc><B>rothauserc(4718)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rothauserc><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=rothauserc><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=638086\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> uC is 1 * 10^-6 Coulombs<BR>\n" );
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document.write( "3.5 uC = 3.5 * 10^-6 Coulombs = Q<BR>\n" );
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document.write( "3.5 * 10^7 = K * Q/(0.09)<BR>\n" );
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document.write( "(9 * 10^-2)(3.5 * 10^7) = K * Q<BR>\n" );
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document.write( "31.5 * 10^5 = K * (3.5 * 10^-6)<BR>\n" );
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document.write( "K = (31.5 * 10^5) / (3.5 * 10^-6)<BR>\n" );
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document.write( "K = 9 * 10^11<BR>\n" );
document.write( " </SPAN>\n" );
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