Answer:
I think the answer is
D Wind, Solar, Hydro-Electric
Explanation:
Answer:
The motion of the object is changing
Explanation:
Objects will only change their motion (direction, speed) if there is an unbalanced force of some kind acting on them. Balanced forces result in no change in the object's state of motion.
Bond energy is a measure of the bond strength of a chemical bond, and is the amount of energy needed to break the atoms involved in a molecular bond into free atoms.
You can identify a substance, by testing the melting and boiling point and find a known substance that has the same melting and boiling points as the one tested