document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=943875>Question 943875</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the speed of light as c = 3 × 10^8 m/s when needed.\r<BR>\n" );
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document.write( "The nearest star to the Sun is Proxima Centauri, at a distance of 4.5 light years. How many times farther is this than the Earth-Sun distance =1.5 × 10^11 m? \r<BR>\n" );
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document.write( "Round your answer to the nearest order of magnitude. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #575504 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=575504\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the speed of light as c = 3 × 10^8 m/s when needed.<BR>\n" );
document.write( "The nearest star to the Sun is Proxima Centauri, at a distance of 4.5 light years. How many times farther is this than the Earth-Sun distance =1.5 × 10^11 m? <BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4.5%28light+Years%29%2A365%28days%2Fyear%29%2A24%28hours%2Fday%29 ALIGN=MIDDLE  ALT=\"4.5%28light+Years%29%2A365%28days%2Fyear%29%2A24%28hours%2Fday%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >*3600(sec/hour)*(3*10^8)(m/sec)=4.5*3.65*2.4*3.6*10^6*3*10^8=425.736*10^16 m<BR>\n" );
document.write( "Distance to Proxima Centauri/Earth-Sun distance<BR>\n" );
document.write( "(425.736*10^16)/(1.5*10^11)=283.82*10^6=2.83*10^8<BR>\n" );
document.write( "How many times farther is this star than the Earth-Sun distance? 2.83*10^8 <BR>\n" );
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