The mass of an electron is 9.11
×
×
10
−31
−31
kg.
1)
how far apart would two electrons have to be in order for the electric force exerted by each on the other to be equal to the weight of an electron? (express your answer to three significant figures.)

Ahockey player of mass 82 kg is traveling north with a velocity of 4.1 meters per second he collides with the 76 kg player traveling east at 3.4 meters per second if the two players locked together momentarily in what direction will they be going immediately after the collision how fast will they be moving