Where does tissue fluid come from?

A resistor draws energy from a battery. Where does this energy come from?

If the nucleons of a nucleus are separated from each other, the total mass is increased. Where does this mass come from?

If the nucleons of a nucleus are separated from each other, the total mass is increased. Where does this mass come from?

When a ferromagnetic material goes through a hysteresis loop, its theremal energy is increased. Where does this energy come from?

When we push anb object like a school bag or lift a bucket of water, where does the force come from?

When a Coolidge tube is operated for some time it becomes hot. Where does the heat come from?

What change did you observe in the thermometer in the given experiment ? Where does the heat come from ?

When a Coolidge tube is operated for some time it becomes hot. Where does the heat come from?