Answer:
B. A system cannot take in additional matter.
Explanation: The total amount of energy in the universe remains constant, it can merely change from one form to another.
Hope it helps you:)))
have a good day
Answer:
Work
Explanation:
The use of force to move an object is the definition of "work" in physics.
Answer:
299,792,458 m/s = speed of light
Explanation: