First Law of Thermodynamics

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First Law of Thermodynamics

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#36

2010-10-16, 01:21 PM

Lozmaster Wrote:It's a bit of a cheat really, because Pressure can be treated as approximately ~constant at an infinitesimal limit, even if we know it isn't really. It leads to dP= 0 since P is a *constant* which leads to dW=-PdV

Say you sink a cubical box in the water and it is rotating. The pressure at the bottom of the box is going to be greater than the pressure at the top. The rotational motion is going to lower the fluid pressure in a nonuniform way. Overall, there's no way dP=0.

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First Law of Thermodynamics - by 2147483647 - 2010-10-14, 10:32 PM

First Law of Thermodynamics - by JoeTang - 2010-10-14, 10:40 PM

First Law of Thermodynamics - by 2147483647 - 2010-10-14, 10:41 PM

First Law of Thermodynamics - by JoeTang - 2010-10-14, 10:45 PM

First Law of Thermodynamics - by 2147483647 - 2010-10-14, 11:08 PM

First Law of Thermodynamics - by Fiel - 2010-10-14, 11:20 PM

First Law of Thermodynamics - by Riyuran - 2010-10-14, 11:20 PM

First Law of Thermodynamics - by Corn - 2010-10-14, 11:25 PM

First Law of Thermodynamics - by 2147483647 - 2010-10-14, 11:28 PM

First Law of Thermodynamics - by Stereo - 2010-10-14, 11:49 PM

First Law of Thermodynamics - by Turtally - 2010-10-14, 11:50 PM

First Law of Thermodynamics - by 2147483647 - 2010-10-14, 11:54 PM

First Law of Thermodynamics - by Riyuran - 2010-10-15, 12:07 AM

First Law of Thermodynamics - by ImagineAll - 2010-10-15, 12:30 AM

First Law of Thermodynamics - by Cyadd - 2010-10-15, 12:39 AM

First Law of Thermodynamics - by Dusk - 2010-10-15, 12:51 AM

First Law of Thermodynamics - by 2147483647 - 2010-10-15, 01:09 AM

First Law of Thermodynamics - by Cyadd - 2010-10-15, 01:15 AM

First Law of Thermodynamics - by 2147483647 - 2010-10-15, 01:19 AM

First Law of Thermodynamics - by Dusk - 2010-10-15, 01:20 AM

First Law of Thermodynamics - by JoeTang - 2010-10-15, 01:20 AM

First Law of Thermodynamics - by 2147483647 - 2010-10-15, 01:21 AM

First Law of Thermodynamics - by Cyadd - 2010-10-15, 01:22 AM

First Law of Thermodynamics - by ImagineAll - 2010-10-15, 01:27 AM

First Law of Thermodynamics - by Dusk - 2010-10-15, 01:34 AM

First Law of Thermodynamics - by 2147483647 - 2010-10-15, 01:39 AM

First Law of Thermodynamics - by Cyadd - 2010-10-15, 01:43 AM

First Law of Thermodynamics - by 2147483647 - 2010-10-15, 01:49 AM

First Law of Thermodynamics - by Stereo - 2010-10-15, 01:51 AM

First Law of Thermodynamics - by Cyadd - 2010-10-15, 01:52 AM

First Law of Thermodynamics - by 2147483647 - 2010-10-15, 01:55 AM

First Law of Thermodynamics - by Dusk - 2010-10-15, 01:56 AM

First Law of Thermodynamics - by Cyadd - 2010-10-15, 02:09 AM

First Law of Thermodynamics - by shouri - 2010-10-15, 02:52 AM

First Law of Thermodynamics - by Lozmaster - 2010-10-16, 12:23 PM

First Law of Thermodynamics - by 2147483647 - 2010-10-16, 01:21 PM

First Law of Thermodynamics - by Lozmaster - 2010-10-16, 01:34 PM

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