PLEASE HELP!! Which statement best describes the relationship between atoms and
nuclear forces?

Strong nuclear forces hold the nucleus of an atom together. Weak nuclear
forces hold neutrons and electrons together.

Weak nuclear forces hold the nucleus of an atom together. Strong nuclear
forces are responsible for breaking down atoms.

Weak nuclear forces hold small atoms together. Strong nuclear forces hold
large atoms together.

Strong nuclear forces hold the nucleus of an atom together. Weak nuclear
forces are involved when certain types of atoms break down.

What is the difference between electrically neutral objects and electrically charged objects

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?

The ultracentrifuge is an important tool for separating and analyzing proteins. because of the enormous centripetal accelerations, the centrifuge must be carefully balanced, with each sample matched by a sample of identical mass on the opposite side. any difference in the masses of opposing samples creates a net force on the shaft of the rotor, potentially leading to a catastrophic failure of the apparatus. suppose a scientist makes a slight error in sample preparation and one sample has a mass 10 mg larger than the opposing sample. if the samples are 12 cm from the axis of the rotor and the ultracentrifuge spins at 70,000 rpm, what is the magnitude of the net force on the rotor due to the unbalanced samples? ( be thorough on your answer)