If a roller coaster car needs more Kinetic Energy (KE) to reach the top of the track, what are two ways to increase
the amount of Kinetic Energy the car has?

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

When you turn on a battery-operated device, an electrical circuit is

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.