document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=553333>Question 553333</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A space probe leaves Earth at the rate of 3 km/s. After 100 days, a radio signal is sent to the probe. Radio signals travel at the speed of light, about <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x10%5E5 ALIGN=MIDDLE  ALT=\"3x10%5E5\"   DISABLED_style= \"max-width:90%; height:auto;\" > km/s. About how long does the signal take to reach the probe? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #360816 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=360816\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A space probe leaves Earth at the rate of 3 km/s. After 100 days, a radio signal is sent to the probe. Radio signals travel at the speed of light, about <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x10%5E5 ALIGN=MIDDLE  ALT=\"3x10%5E5\"   DISABLED_style= \"max-width:90%; height:auto;\" > km/s. About how long does the signal take to reach the probe?<BR>\n" );
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document.write( "100 days = 8640000 seconds = 8.64E6 seconds<BR>\n" );
document.write( "d = r*t<BR>\n" );
document.write( "d = 3*8.64E6 km = 2.592E7 km<BR>\n" );
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document.write( "t = d/r = 2.592E7/3E5 = 0.864E2 seconds<BR>\n" );
document.write( "t = 86.4 seconds for the signal to reach the probe.<BR>\n" );
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