A force of 22.7 N stretches an elastic band at room temperature. The rate at which its entropy changes as it stretches is about J/Km. Round your answer to 3 decimal places.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

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.

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