document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1006184>Question 1006184</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In 2005 a planet was found revolving about a distant sunlike star in 3.88 days. The radius of its orbit is 1700000 km. What is its linear velocity (in km/h) about its star? \r<BR>\n" );
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document.write( "The linear velocity is 115000 km/h, how do you get that?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #622332 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=622332\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Assume a circular orbit.<BR>\n" );
document.write( "the radius is 1.7X10^6 km<BR>\n" );
document.write( "the circumference is 2*pi*r=10.676 * 10^6 km.<BR>\n" );
document.write( "It goes around the star in 3.88 days, which is 24*3.88 =93.12 hours<BR>\n" );
document.write( "divide 10.676^10^6 km by 9.312 *10^1 hours (or 10676000 by 93.12)<BR>\n" );
document.write( "114,646 km/h or 115,000 km/h<BR>\n" );
document.write( "The radius gives you the circumference, and you divide the circumference in km by time in hours and get speed in km/h. </SPAN>\n" );
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