C. or A. Is your best bet
Answer:
Explanation:
<u><em>What is the potential energy of a 2-kg book sitting on a shelf 2 meters above the ground?</em></u>
<em></em>
PE = MGH, that is, potential energy = mass x gravity x height.
2*2*9.8=
39.2 joules
Answer:
B.
Explanation:
The up and down movement of gases and liquids caused by heat transfer is convection.
A atom is a basic element
