• What is significant about the amount of Gravitational Potential Energy of the train at the top of the first hill? it he

explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.

increase masses, decrease separation

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach