Pv diagrams

[get_physical]

PV diagrams.
a DIAGONAL straight line going down (negative slope) on a PV digram with P on y-axis and v on x-axis.

The temperature of the gas ______________.
Choices:
Decreases then increase
Increase then decrease


At first I chose remains constant... but it was wrong. I tried to plug it into the Ideal gas Law formula, and i get T to decrease the entire way. but that isn't a choice.

 

[tiny-tim]

Welcome to PF!

Hi get_physical ! Welcome to PF!

Hint: what would be the shape of the pv curve if the temperature was constant?

draw several curves (on the same graph paper) for different constant temperatures …

how does the diagonal line cut those curves?

 

[get_physical]

thankyou tiny-tim!

 

[get_physical]

how do i mark this as solved?

 

[tiny-tim]

how do i mark this as solved?

Hi get_physical!

(sorry I didn't reply earlier … I'm not getting email notification of replies at the moment … are you getting them?)

Normally, you click "Thread Tools" at the top … but it got de-activated in the latest upgrade … see https://www.physicsforums.com/showthread.php?t=240061&highlight=solved".