A
170 g hockey puck sliding at 25 m/s slows to a speed of 10 m/s in a distance of
7.5 m. determine the force of friction
causing the puck to slow.

Ingrid wrote the hypothesis below. if the temperature of a liquid increases, the density of the liquid decreases because the particles move farther apart. what are the variables in her hypothesis?

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.