In 4 -5 sentences, summarize the science of the sport of curling and how it relates to friction

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above

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.