A rubber balloon is filled with normal air and sealed, and the gas inside is heated with an electrical coil. A) What happens to the particles inside the balloon
when the gas inside is heated? B) How does this affect the force the particles
strike the balloon wall? C) Use the kinetic theory to predict the effect of heating
the gas inside a balloon on the volume (size) of the balloon.

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.