Applying PV=constant to find pressure and volume changes

[Arun Raja]

Homework Statement

http://puu.sh/c0rhe/fb6b48f890.png

Homework Equations

PV=constant

The Attempt at a Solution

I have no idea how to apply the above equation. Please help.[/B]

 

[ehild]

The above equation (PV=const) can not be applied. For what process is it valid? What process is the problem about?

ehild

 

[Arun Raja]

It is a isobaric process.

 

[ehild]

Remember the ideal gas law. What equation holds between V and T in an isobaric process?

 

[Arun Raja]

V/T=k

but how is this supposed help me answer the question?
Pls provide some help.
I am having my exams tmrw

 

[NascentOxygen]

Perhaps you could do it in a couple of steps?

The graph B shows the V-T plot for a mass m at a constant pressure P. What would be the V-T plot for one quarter of that mass, m/4, at the same constant pressure P?

Finally, what would now be the plot for m/4 at half the pressure, viz., P/2?