A boy lifts a 25 N dragon 2 meters above the ground. How much work did the boy do to left the dragon?

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Oxygen and nutrients are moved through the body by the: a. circulatory system c. lymphatic system b. digestive system d. reproductive system