Answer:
4Amps. i can't see other questions clearly
Explanation:

I=V/R
I=120/30
I=4amps
Answer:
This is how
Explanation:
<em>Protons and neutrons have approximately the same mass, but they are both much more massive than electrons (approximately 2,000 times as massive as an electron). The positive charge on a proton is equal in magnitude to the negative charge on an electron.</em>
Answer:
A is a physical change, no atoms are being lost its still in it original form
B is a chemical change, it is losing atoms and changing into a new substance
Explanation:
Answer:
The volume of the gas got doubled.
Explanation:
Charle's law states that the volume of an ideal gas is direclty proportional to the absolute temperature.
Thus, V ∝ T
Or,
<u>If the bottle is heated to the double of the temperature, the volume of the gas also gets doubled.</u>