Nucleus splits into two?

A58-kg boy swings a baseball bat, which causes a 0.140-kg baseball to move toward third base with a velocity of 38.0 m/s.

The power exerted by a muscle is the product of the force exerted and the velocity of contraction. the area of which of these shaded regions represents the power exerted while a weight is lifted at maximum speed?

You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.