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HNQ
1:51 AM
1
Q: Why does the negative sign arise in this thermodynamic relation?

Srijan GhoshI can't understand why $\left(\frac{\partial P}{\partial V} \right)_T=-\left(\frac{\partial P}{\partial T} \right)_V\left(\frac{\partial T}{\partial V}\right)_P$. Why does the negative sign arise? I can easily write $\left(\frac{\partial P}{\partial V}\right)_T=\left(\frac{\partial P}{\partial T}...

 
 
11 hours later…
HNQ
12:27 PM
3
Q: Is Angular momentum conserved in Impure rolling

Lelouche LamperougeIn a situation where a disk is rolling WITH slipping on the ground i.e velocity of centre of mass is greater than $r\omega$, is angular momentum conserved about a point on the ground. What confuses me is that friction decelerates the disk to make $v_{com} = r\omega$ and in this process some velo...

 

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