physics
posted by Anonymous on .
he speed of light in a vacuum is about 3.00 108 m/s how many kilometers a pulse from a laser beam travels in exactly 3.9 hours.

change 3.9hrs to seconds,multipy by the speed of light.
posted by Anonymous on .
he speed of light in a vacuum is about 3.00 108 m/s how many kilometers a pulse from a laser beam travels in exactly 3.9 hours.
change 3.9hrs to seconds,multipy by the speed of light.