<PRE><B>Question 323000</B>
a) Show the speed of light in scientific notation in units of miles/hr.
6.71(10^8) mi/hr  
:
:
b) Given that Moon on average is 240,000 miles away from where you are standing on Earth, how long does it take a light ray to travel from the Earth to the Moon?
:
Convert to miles per second
{{{671080888/3600}}} = 186,411.358 mi/sec
:
{{{240000/186411.358}}} = 1.287 sec </PRE>