document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=886921>Question 886921</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Given that the speed of light in vacuum is 3.00×108m/s, how many seconds does it take light to travel a distance of 2.60km ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #536234 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=536234\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given that the speed of light in vacuum is 3.00×108m/s, how many seconds does it take light to travel a distance of 2.60km ?<BR>\n" );
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document.write( "Use ^ (Shift 6) for exponents.<BR>\n" );
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document.write( "d = r*t<BR>\n" );
document.write( "r = 3*10^8 = 3e8 m/sec = 3e5 km/sec<BR>\n" );
document.write( "t = d/r<BR>\n" );
document.write( "t = 2.6/3e5 = 0.8666e-5 sec<BR>\n" );
document.write( "t = 8.666e-6 or 8.666*10^-6 sec<BR>\n" );
document.write( "t = 8.666 microseconds<BR>\n" );
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document.write( "The format 3e8 is commonly used in programming and math.  <BR>\n" );
document.write( "It's much easier to type. </SPAN>\n" );
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