English units of distance include the

The velocity of a curling stone is due east. what will be the direction of the momentum of the curling stone as it moves?

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.