The pull of gravity on Mars is 3.7 m per second squared. if an astronaut lifts a 10 kg rock 1 m off the ground, just to see whats under it. How much work has the astronaut performed.

Hello,your answer would be iron! plz mark me brainliest! hope this !

In atoms, the electron carries a negative elementary or unit charge; the proton carries a positive charge. the two types of charge are equal and opposite. in an atom of matter, an electrical charge occurs whenever the number of protons in the nucleus differs from the number of electrons surrounding that nucleus.

The answer would be d. hope this :