An electron has an negative charge. what is true about the charge of a particle that is attracted to an electron

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?

Aprisoner is forced to go into one of three rooms, but he can choose which room. the first room is ablaze with fire. the second one is rigged with explosives that will go off as soon as he enters. the third contains a pair of lions who haven't eaten in years. which room should he choose to survive?

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?