document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=395437>Question 395437</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This for my variation, ratio and proportions work, could someone please help, I am having so many problems even figuring out where to start.<BR>\n" );
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 on the particle, Q (in Coulombs, C), and inversely proportional to the square of the distance from it, d, in metres.<BR>\n" );
document.write( "(i) Set up the proportional relationship.<BR>\n" );
document.write( "Which I think is E=k sqrt Q/d is this correct<BR>\n" );
document.write( "(ii)Find the constant of proportionality if the electric field strength 3.00cm from a 3.5uC charge is 3.5*10^7 NC^-1  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #280627 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=280627\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An electrically charged particle generates an electric field around it. <BR>\n" );
document.write( "The strength, E, of the electric field (in NC^-1) is directly proportional to the size of the charge on the particle, Q (in Coulombs, C), and inversely proportional to the square of the distance from it, d, in metres.<BR>\n" );
document.write( "(i) Set up the proportional relationship.<BR>\n" );
document.write( "Which I think is E=k sqrt Q/d is this correct<BR>\n" );
document.write( "---<BR>\n" );
document.write( "No: E = k*Q/d^2<BR>\n" );
document.write( "==============================<BR>\n" );
document.write( "(ii)Find the constant of proportionality if the electric field strength 3.00cm from a 3.5uC charge is 3.5*10^7 NC^-1<BR>\n" );
document.write( "---<BR>\n" );
document.write( "3.5*10^7 = k*3.5/3^2<BR>\n" );
document.write( "---<BR>\n" );
document.write( "k = 9(3.5*10^7)/3.5<BR>\n" );
document.write( "k = 9*10^7<BR>\n" );
document.write( "===================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );