Answer:
Solids
Explanation:
Solids, liquids, and gases all have mass.
We can reasonably improve a machines ability to do work by reducing the friction between the moving parts of machine.
All machines are not 100% efficient because of <span>C. Friction</span>
Answer:

Explanation:
We are given that
Charge=q=

Potential difference=V=3 V
We know that
Work done=
Using the formula
Work done by charge to move from the negative terminal to the positive terminal of battery=
J
Work done by charge to move from the negative terminal to the positive terminal of battery=
A. The molecules start packed together very tightly in a solid. Then when it turns to water, the molecules can move around each other freely, but still contained. When water turns to vapor, the molecules are going crazy moving around. They are not contained at all and bounce of of each other freely.
b. The temperature rises. (ice turns to water at 33 degrees and water turns to vapor at 212 degrees)