The drawing shows two objects, a and b. the arrows inthe
drawing symbolize the flow of heat into or out of an object, aswell
as work done on or by an object. find the change in theinternal
energy of the system when it is (a) object a only, (b)object b
only, (c) objects a and b together. in each case, specify whether
the change is a decrease or an increase.

John throws .4 kg ball with velocity of 18 m/s. hits .2 kg bottle and bottle flies 25 m/s. how fast is ball traveling after hitting the bottle?

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

Agas contained within a piston-cylinder assembly undergoes three processes in series: process 12: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 23: constant pressure expansion to 1 liter. process 31: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat