Aspring is stretched 2.0 cm. if the same spring is stretched 8.0 cm the ratio of the second and first potential energies of the spring is

16
9
4
1

What is the scientific definition of energy that relates to work

The energy produced as a result of this flow of electrons from atom to atom is called

Aswimming pool whose volume is 10 comma 000 gal contains water that is 0.01% chlorine. starting at tequals0, city water containing 0.003% chlorine is pumped into the pool at a rate of 5 gal/min. the pool water flows out at the same rate. what is the percentage of chlorine in the pool after 1 hour? when will the pool water be 0.006% chlorine?