A 1 kg rock is sitting at the edge of a cliff 100 meters high. What is the rock's gravitational potential energy?

Diamond will scratch quartz. true or false

Arowboat passenger uses an oar to push the boat off the dock by exerting a force of 40n for 3.0s. what impulse acts on the boat.

Acapacitor is storing energy of 3 joules with a voltage of 50 volts across its terminals. a second identical capacitor of the same value is storing energy of 1 joule. what is the voltage across the terminals of the second capacitor?