In a hydraulic device, the surface area of the small piston is 1 cm2 and the surface area of the large piston is put on the small piston, how much force will be exerted on the large piston.

How do we measure or think of speed in the united states?

What is the coefficient of kinetic friction μk between the block and the tabletop?

In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.