The coefficient of kinetic friction is measured in two different ways for the same surfaces of contact. The first measurement gives and value of 0.36 and the other yields a coefficient of 0.40. What is the percent difference

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.

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging

Meaning of a nonzero y-intercept to a graph of reaction distance versus speed