How much energy is done by gravity when a 5.0kg object moves 3.0m vertically upward than 1.5m horizontally then 3.0m vertically downward?

Which type of basaltic lava flow has a fairly smooth

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

If you put a helium-filled balloon in the refrigerator, what will happen?