Problema Solution
Suppose that, 25 mi from where you're standing, a bolt of lightning splits a tree. How long will it take to see the flash of light?
Answer provided by our tutors
The speed of light in mph (miles per hour) is
c = 670616629 mph
d = 25 mi the distance
t = ?
since speed = distance/time follows time = distance/speed
t = d/c
t = 25/670616629 hr
t = 3.7278*10^(-8) hr
t = 1.342*10^(-4) sec
it will take 1.342*10^(-4) seconds to see the flash of light.