A1.8 kg book has been dropped from the top of the football stadium. it's speed is 4.8 m/s when it is 2.9 meters above the ground. what is it's mechanical energy

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational

A2.0 μf capacitor and a 4.0 μf capacitor are connected in series across a 0.827-kv potential. the charged capacitors are then disconnected from the source and connected to each other with terminals of like sign together. find the voltage across each capacitor.

What’s #16 asking me and how do i solve it?