Hi, I'm confused by this question and don't know where to start:
Do I use the ideal gas law pV= mRT and take it from there? A method would be useful.
Many thanks
top of page
Comments (3)
bottom of page
Hi, I'm confused by this question and don't know where to start:
Do I use the ideal gas law pV= mRT and take it from there? A method would be useful.
Many thanks
So I can find the masses of each from the ideal gas law, and then using the isentropic relationships pV^gamma, and TV^(gamma-1), I can find Pressure & Temp after first compression stroke. But what about Q4), after the expansion stroke, finding the Pressure & Temp, I think I use isentropic relationships again, but not sure what the P1 and V1 are now, any help much appreciated.
Thanks.
For Q1 finding the masses, - do I use pV = mRT in each case:
e.g. the Cylinder Volume = 0.001508m^3, & Vb/Vc = 0.9, so Bottle Volume = 0.001357m^3
So is the mass of air in the Bottle m = pV/RT = 101325 x 0.001357 / 287 x 298 = 0.0016 kg
Am I on the right track?
Many thanks
Just saw this too, but I'm still struggling a little