Answer:
a. the product of the current and the time interval
Explanation:
the basic formula is: 
current means the time rate of flow of charge: 
where Q - charge
I - current
t - time
Time = (distance) / (speed)
Time = (150 x 10⁹ m) / (3 x 10⁸ m/s) =
50 x 10¹ sec =
<em>500 sec</em> = 8 min 20 sec
Answer:b. Hydroelectric energy uses the energy from the sun, which is a renewable resource
Explanation:
Force, it is force because to be able to move anything you must use force.