2. The frequency of a particle performing uniform circular motion change from 60 r. pm to 180 r. p.m in 20 seconds. Calculate the
angular acceleration​

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island