Two identical small insulating balls are suspended by separate 0.26-m threads that are attached to a common point on the ceiling. each ball has a mass of 7.75 10^-4 kg. initially the balls are uncharged and hang straight down. they are then given identical positive charges and, as a result, spread apart with an angle of 35° between the threads. (a) determine the charge on each ball. (answer in c)

From the perspective of an employee that effective channeling of work related information and concerns

Two cannon balls weighing 18 kg and 24 kg are chained together and fired horizontally with a velocity of 165 m/s from the top of a 21-m wall. the chain breaks during the flight of the cannonballs and the 18-kg cannonball strikes the ground at t = 1.5 s, at a distance of 240 m from the foot of the wall, and 7 m to the right of the line of fire. determine the position of the other cannonball at that instant. neglect the resistance of the air.

Dc versus ac problem. suppose your dc power supply is set to 15 v and the vertical setting on the oscilloscope is at 5 v/div. how many divisions will the trace deflect if you connect the output of the power supply to the scope with the a input switch set on dc? how many divisions if the switch is on ac?