How strong is the repulsive force exerted on two point charges that each carry 1.0 e-6 c of negative charge and are 0.30 meters apart? coulomb’s constant is 9.0 e9 n*m^2/c^2 remember to identity all of your data, write the equation, and show your work.

Three point charges, two positive and one negative, each having a magnitude of 20 μc are placed at the vertices of an equilateral triangle (30 cm on a side). what is the magnitude of the electrostatic force on the negative charge

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.