The box is pulled horizontally across the floor by a force of 100 N and opposed by a frictional force of 60 N. The object accelerates at 4 m/s2 .

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

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?

Does current flow through or across a resistor?