<PRE><B>Question 810737</B>
A light year is the distance light travels in 365 days. If the speed of light is 3.00 x 10^10 cm/s, calculate the length of the light year in a) meters and b) feet
----------
It&#39;s usually given in km/sec = 3*10^8 or 3E8 km/sec
------
1 day = 86400 seconds
1 ly = 3E8*86400*365 km
Multiply that to get a LY in km
---
1 km = 1000 meters
---
1 foot = 0.3048 meters
</PRE>