finding work with minimal information
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finding work with minimal information
When only given internal energy and energy absorbed by external forces, how is work supposed to be calculated, is there another formula besides w=p change of v?
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Re: finding work with minimal information
You take energy absorbed and in that case q would negative because the system is doing work (energy lost). You use the delta U = q + w equation. And given delta U and q, you would find work
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Re: finding work with minimal information
Using the equation = q + w, you can solve for w as the and the q are given to you as internal energy and energy absorbed by the surroundings.
Re: finding work with minimal information
If you're dealing with a system where pressure-volume work is not the primary factor (for example, chemical reactions, phase changes), or if information about pressure and volume changes is not provided, then the formula W=q−ΔU can be used.
Re: finding work with minimal information
We can use the formula delta U = q + w and isolate for w (work) when given the change in internal energy energy absorbed by the experimental surroundings.
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