Physics
posted by John on .
use the face that the speed of light in a vacuum is about 3.00 x10^8 m/s to determine how many kilometers a pulse from a laser beam travels in exactly eighteen hours

distance=speed*time
= 3E8m/s*18hrs*3600sec/hr
posted by John on .
use the face that the speed of light in a vacuum is about 3.00 x10^8 m/s to determine how many kilometers a pulse from a laser beam travels in exactly eighteen hours
distance=speed*time
= 3E8m/s*18hrs*3600sec/hr