You carve your and your sweetheart’s initials in the trunk of a 3-meter tall tree, 1.5 meters above the ground. fifty years later you return, and on a romantic whim, you find your old carved heart. the tree has grown one meter taller per year. how high above ground are your initials?

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false

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.