document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1020411>Question 1020411</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A satellite can move at 17,000 miles per hour. How many hours will it take to reach a star that is three light years away? Recall that 1 light year = 9.5 &#8729; 10^12 kilometers and 1 kilometer = 0.62 miles. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #636299 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52818)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><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=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=636299\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "A satellite can move at 17,000 miles per hour. How many hours will it take to reach a star that is three light years away? <BR>\n" );
document.write( "Recall that 1 light year = 9.5 &#8729; 10^12 kilometers and 1 kilometer = 0.62 miles.<BR>\n" );
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document.write( "Let me make couple of notices before somebody will start calculations :=)\r<BR>\n" );
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document.write( "1. The closest star to the Sun is Proxima Centauri at the distance of &nbsp;4.24 light years &nbsp;(according &nbsp;<A  rel=nofollow HREF=https://en.wikipedia.org/wiki/List_of_nearest_stars_and_brown_dwarfs>this article</A>&nbsp; from Wikipedia).\r<BR>\n" );
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document.write( "2. This velocity, &nbsp;17,000 miles per hour, &nbsp;is the first cosmic velocity.\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;By speaking about the flight to the stars, it makes sense to operate with velocities starting from the third cosmic, \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;which is &nbsp;16.7 <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=km%2Fs ALIGN=MIDDLE  ALT=\"km%2Fs\"   DISABLED_style= \"max-width:90%; height:auto;\" > ~ 37600 miles per hour. \r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;See &nbsp;<A  rel=nofollow HREF=http://www.dsp.agh.edu.pl/_media/en:dydaktyka:cosmic_velocities.pdf>http://www.dsp.agh.edu.pl/_media/en:dydaktyka:cosmic_velocities.pdf</A> \r<BR>\n" );
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document.write( " </SPAN>\n" );
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