4. An ideal gas changes from a state defined by pressure pi and volume Vi to a state defined by pressure P2 and volume V2. Which set of properties is independent of the path between the two
states?
O change in internal energy of the gas
O work performed by or on the gas
O heat transfered to or from the gas
O work and heat transfer involving the gas
You

To a of 4 x hz is 1. 0. mm nm nm

What would be the radius of the earth if it had its actual mass but had the density of nuclei? express your answer to two significant figures and include the appropriate units.

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.