A graph titled position versus time has an horizontal axis time (seconds) and a vertical axis position (meters). A straight line passes from 0 seconds, 0 meters to 5 seconds, 20 meters. Calculate the slope of the line on the graph using the formula:

m = m = v subscript 2 - v subscript 1 over x subscript 2 minus x subscript 1.

The slope of the line is
⇒ 4 m/s.

Agas contained within a piston-cylinder assembly e end nation about same energy states, 1 and 2, where pi 10 bar, v undergoes two processes, a and b, between the sam 0.1 m3, ui-400 kj and p2 1 bar, v2 1.0 m2, u2 200 kj: process a: process from 1 to 2 during which the pressure- volume relation is pv constant process b: constant-volume process from state 1 to a pressure of 2 bar, followed by a linear pressure-volume process to +20 0 state 2 kinetic and potential energy effects can be ignored. for each of the processes a and b, (a) sketch the process on p-v coordinates, (b) evaluate the work, in kj, and (c) evaluate process the heat transfer, in kj