Two protons attract each other when

Like poles attract each other.

Assume a proton is a sphere of radius R~~1 fm. Two protons are fired at each other with the same kinetic energy. K a. What must K be if the paticles are brought to rest by their mutual Coulomb repulsion when they are just touching each other? We can take this value of K as a representative measure of the height of the Colulomb barrier.

Two charged spheres attract each other with a force. If they are touched with each other and thereafter brought back to their initial positions, the two spheres

State the principle as to why these balls attract each other when air is blown between them.

Two parallel wires carrying currents in the same direction attract each other because of:

The gravitational force between two protons is attractive. Then the Coulomb force between the protons is

Two bodies are at a speCific distance so as to attract each other. Now many times will the mutual force of attraction be if the mass of one of them is doubled?