00:01
This question belongs to the laws of thermodynamics in which we have to determine if process ab is adiabatic and gamma is equal to 1 .4, then for the part a, we have to determine the pressure at the point b.
00:13
So, from the adiabatic equation, we can write that pa multiplied by va to the power gamma, this will be equal to pb multiplied by vb to the power gamma.
00:24
So from here, pb, this will be equal to p .a.
00:26
Multiplied by va to the power to vb to the power gamma.
00:32
So substituting values from the graph, so pv, this will be equals to pa pressure at the point a.
00:38
This is 60 kilo -pascal as per the question.
00:41
So 60 -kil pascal multiplied by v -a by vb, v -b, this will be from the graph.
00:48
So v -a is 5 liter and v -b is 1 -liter and to the power 1 .4.
00:53
So from here we get pb...