The force required to drag several objects across a floor was measured. Calculate the µK for these objects.

Block Weight Friction µK

A 150 lb 30 lb

B 20.0 N 5.0 N

C 1,500 lb 60 lb

(NOTE: I don't want want you to just give me the answer, I want to know how to work it.)

What are igneous intrusions and extrusions

Asap and show ! a 14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane