A neutron and a proton combine to form a nucleus. Why does the mass of the nucleus differ from the sum of the masses of the individual nucleons?

After a big snowfall, you take your favorite rocket-powered sled out to a wide field. the field is 195 m across, and you know that your sled accelerates at a rate of 3.65 m/s2 when the rocket is on. how much time will it take the sled to cross the field starting from rest, assuming the rocket is on the whole time?

Determine the maximum r-value of the polar equation r =3+3 cos 0

An element becomes a positively charged ion when itloses protons.loses electrons.gains electrons.gains neutrons.