Two charges valued 1 c and 2 c are sitting 200 centimeters apart from one another find the force exerted on the charges by one another

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o