00:01
Figure 12 .6, p, 12 .6 is following.
00:04
So we have on x -axis the volume in a meter cube.
00:09
On y -axis, we have a pressure that is multiplied with a factor of 10 to the power 5 in a pascal.
00:15
So maximum here we have four and here is one.
00:19
Here we have one and here we have a five.
00:22
So the gas expands, gas expands here at constant pressure from point a to point b here.
00:30
And then at a constant volume, constant volume, then the pressure is increased.
00:39
And then the gas is compressed.
00:42
Then the gas is heated at a constant volume.
00:46
So we have a, b, c, d here.
00:51
So the work done in a path a, a, b will be equal to simply looking in this graph, 4 times 4 times 10 to the power 5 4 is our volume so we'll use the work equation that is work is equal to power times delta v so sorry there's a pressure times delta v delta v is the changing volume so the pressure initially we have here for the path is 4 so multiply 4 with change in volume change in volume we have here is 4 times 10 to the power 5 10 to power 5 factor comes from the pressure.
01:29
So the work done through the part ab is a 16 times 10 to power 5...