Which of the following statements correctly describes the law of conservation of energy?
A) Energy can change between many different forms, such as potential, kinetic, and thermal, but it is ultimately destroyed.
B) An object always has the same amount of energy.
C) The fact that you can fuse hydrogen into helium to produce energy means that helium can be turned into hydrogen to produce energy.
D) The total quantity of energy in the universe never changes.
E) It is not really possible for an object to gain or lose potential energy because energy cannot be destroyed.
D
You might also like to view...
The change in shape due to transport of atoms along grain boundaries is called _________creep.
Fill in the blank(s) with the appropriate word(s).
At t = 0, a particle leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xy plane with a constant acceleration of 
m/s2. At the instant the x coordinate of the particle is 15 m, what is the speed of the particle?
A. 10 m/s B. 16 m/s C. 12 m/s D. 14 m/s E. 26 m/s
A 100-N force has a horizontal component of 80 N and a vertical component of 60 N. The force is applied to a cart on a level frictionless floor. The cart starts from rest and moves 2.0 m horizontally along the floor due to this force
What is the cart's final kinetic energy? A) 160 J B) zero C) 120 J D) 200 J
A skater rotates quickly on the ice. He pushes his arms out. What happens to his rotational kinetic energy?
1.It increases. 2.It decreases. 3.It stays the same. 4.It is impossible to determine.