What happens when a positively charged rod is brought near a neutral plastic ball? electrons in the ball are repelled to the far side of the plastic ball
the protons on the ball repelled by the positive rod and move to the far side of the ball
electrons in the ball are attracted to the near side of the ball
protons on the ball are attracted to the positive rod and move to the near side of the ball

The two required components for a generator

To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.

The electric field inside a cell membrane is 8.0mn/c. what's the force on a singly charged ion in this field?