.86km is the correct answer
Answer:
i have to see the question
Explanation:
Mechanical, because the other two make no sense and mechanical energy is the combination of kinetic and potential energy, or moving and still respectively.
Answer:
The law of conservation of mass states that matter can not be created or destroyed in a chemical reaction.
Explanation:
Physicist Ernest Rutherford<span> established the nuclear theory of the atom with his </span>gold-foil experiment<span>. When he shot a beam of alpha particles at a sheet of </span>gold foil<span>, a few of the particles were deflected. He concluded that a tiny, dense nucleus was causing the deflections.</span>
