Question

For the process shown in the p-V diagram in the following figure, the total work in
going from a to d along the path shown is

Answer 1

(a) 15 × 10^5 J
(b) 9 × 10^5 J
(c) 6 × 10^5 J
(d) 1 × 10^5 J

Answer 2

@cormacpayne this is really hard I have no clue

Answer 3

@campbell_st
@hartnn
I need your help please

Answer 4

@cormacpayne please check this for me!

Answer 5

If I remember right, in a PV diagram, the amount of work done along a path is the area under the curve (or path).

Answer 6

can you explain more please, I know I asked you alot

Answer 7

It's no problem. A key feature of the diagram is that the amount of energy expended or received by the system as work can be estimated as the area under the curve on the chart. For a cyclic diagram, the net work is that enclosed by the curve.

Answer 8

and how do I find the area!

Answer 9

You just have to find the area under the thick blue line, specifically the horizontal line at the top since the area under vertical lines is zero. So find the area under the blue horizontal line that is 3 x 10^5 pascals "tall" and 3 m^3 "long"

Answer 10

oh yeah so it would be 9*10^5

Answer 11

Correct!