Can someone reword this? a magnetic substance has magnetic fields. these fields start at the north pole wrap around the magnet, and terminate at the south pole of the magnet. all magnetic substances have north and south poles

It's basically saying that everything magnetic has two magnetic poles. They start at the north pole and end at the south pole. All magnetic substances have north and south magnetic poles.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)