1. common static electricity involves charges ranging from nanocoulombs to microcoulombs.(a) how many electrons are needed to form a charge of –2.00nc (b) how many electrons must be removed from a neutral object to leave a net charge of 0.500µc?

If a balloon is taken outside on a very cold day, what will occur?

Name two kinds of practical electric pumps.

Aball is thrown from the top of a building with an initial velocity of 21.9 m/s straight upward, at an initial height of 51.6 m above the ground. the ball just misses the edge of the roof on its way down, as shown in the figure. (a) determine the time needed for the ball to reach its maximum height. (b) determine the maximum height. (c) determine the time needed for the ball to return to the height from which it was thrown, and the velocity of the ball at that instant. (d) determine the time needed for the ball to reach the ground. (e) determine the velocity and position of the ball at t = 5.35 s.