What kind of energy is used when throwing a baseball? when you catch the ball, is the energy gained or lost?

The material that keeps its new shape after it is stretched is called?

You can estimate the degree to which a bond between two atoms is ionic or covalent by calculating the

Consider a small frictionless puck perched at the top of a fixed sphere of radius r. if the puck is given a tiny nudge so that it begins to slide down, through what vertical height will it descend before it leaves the surface of the sphere? [hint: use conservation of energy to find the puck's speed as a func e conservation of energy to find the puck's speed as a function of its height at what value of this normal force does the puck leave the sphere? ] here on the puck.