What’s the moon phase ?(Hint: the moon is revolving
around the Earth in a counter-clockwise motion)

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.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

An object in mechanical equilibrium is an object