Recent content by kulkajinkya

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Q: A block rests on a table. You push with a horizontal force of 1 N and it doesn't move. What's the value of the static friction force? What if the mass of the block doubled? Will that change the static friction? Ans: Value is 1N. Even if the mass is doubled, the force remains 1N, just the...

Hi people, I'm currently working on a project regarding entropy generation by (emissive only) radiative heat transfer from heat sinks. But I'm unable to find a proper treatment regarding Second Law analysis for Radiative Heat Transfer. Can someone give me the link to any book or any article...

Thank you people for the answers!

So essentially you mean to say that on one hand we are increasing disorder by increasing the temp, but simultaneously decreasing disorder by reducing the volume? Like balancing both of them and getting a 'net' result of an 'unchanged' disorder, right?

I didn't get this line: 'If the compression is done slowly and without heat exchange, that the entropy is constant follows from the second law of thermodynamics. There is no connection to disorder in this theory'. Will you please elaborate?

nice approach, same problem here

I have a quick question. Consider the process S2 to S1 in the figure below Since this represents wet (isentropic) compression, mathematically we have ΔS=0 (assuming adiabatic compression). But if we consider the process in a physical way, we are going from a region of less disorder...

Hi people, I have a question. Where can we apply the first law of thermodynamics? I mean is it applicable between 2 equilibrium points? Or between a reversible process? When we consider free expansion of a gas into vacuum, we apply the first law. But since the process isn't reversible (or even...

Thanks people, things are much clear now :)

I'm sorry but I still don't get it. My point is you cannot have adiabatic and isothermal process because for isothermal we have PV=C, and for adiabatic, we have PV^n=const. These 2 curves will never be the same (i.e fit) between any 2 state points (here initial and final state)..So it has to be...

Let's consider free expansion of an Ideal gas into vacuum. We have 2 (insulated) partitions, one with the gas, another vacuum, separated by a stop cock. I lift the cock, letting the gas expand into vacuum. I am aware that in free expansion of a gas into vacuum, the change in internal energy i.e...