Recent content by Cozy_Powell

It makes sense now! :) Many thanks Merlin3189!

Thank you very much for your reply, Merlin3189! Sorry for not providing the direct link for my question on my first post. Yes, it's from Cambridge. And yes, it is the same type of question from which you copied the sample mark scheme. But I still am not able to understand what they mean... I...

Hello! This is a general question about graphs, but it can be seen specifically on paper 9702/33 February/March 2016, question 1. d) i). On the mark scheme, can be read the following: "Scatter of points must be no more than ± 5° from a straight line in the y (θ ) direction". Can anyone please...

I tried to get the potential from the potential energy and I get a positive sign for potential...! I cannot find what I did wrong. - Gravitational force is conservative so its work W is symmetrical to the change in potential energy U. - Potential is the work done by gravitational force, per unit...

oh... I think I got it! Temperature changes because pressure is not constant... So the diagram should be a straight line from red to blue dot. Is this okay?

Homework Statement 5 kg of a mixture of saturated liquid-vapor water is in a container of fixed volume 2,5 m3. Initially the temperature is 75 ºC and then the water is heated. a) Find the temperature at which the water is completely vaporized. b) Draw the temperature-specific volume diagram...

oh... I'll assume that then! I didn't know we could do it because nothing in the problem tells us that. Thank you very much for your previous hint on the P-v diagram! I was making the huge mistake of thinking that the saturated liquid would get into vapor and that was driving me mad! Thanks...

Thank you very much bbbeard! Regarding to (2)... I've done that, but can we assume that the volume of the liquid is equal to the volume of the container?

Homework Statement 2000 kg of water, initially in a saturated liquid state and at 150 ºC, are heated in a closed container of constant volume, until the pressure is 2,5 MPa. Find the final temperature and the volume of the container. Homework Equations I believe it is a matter of...