The answer is less than, please explain. (first) 2. 20 pts total] The two cylind

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The answer is less than, please explain. (first) 2. 20 pts total] The two cylinders at right each contain n moles Movable Pin of the same ideal gas, Cylinder A has a piston that is locked in place. Cylinder B has a piston of mass M that is free to move without friction. No gas can enter or leave either cylinder. Initially, both gas samples are at the same temperature (T, >°C) and pressure. Ideal gas Ideal gas The cylinders are placed in separate, identical insulating boxes that contain identical amounts of an ice and water mixture at 0°C. After both gas samples have come to thermal equilibrium with the ice and water mixture in their respective boxes, it is observed that some ice remains. cylinders in initial states PV=nRT KEaue A. 4 pts] Is the final temperature of the gas in cylinder A greater than, less than, or the final temperature of the gas in cylinder B? Explain. The final Temp ot tme in A is eaual to e oecaure mey both have me rame moles and tan tem p ond aro placed in identical an oun tr vv ater arthe rame tomp he nly difference ir fxed s. unfixed Volume lout m B. [5 pts] Is the f final pressure of the gas in cylinder B? Explain. gas in cylinder A greater thanless thary or equal to the final prerure in cy lin der A is r than the final presre . me tha pteure in cy lindr A deareores barea OFf PVE NRT ure Temp dcore gro gn me prerrure wil not onange. mus PA i esr than and v remain con utant. ince b har a movenole PB C. (5 pts] Is the final volume of the gas in cylinder A gre final volume of the gas in cylinder B? Explain. ater thayt less than, or equal to the The finau volume of the qar in A ir greater than B becaur the volume of A can t cnange. Jince the temp. decrearer the piston mover aown to com pensate far the de ore oR in Tem perature D. [6 pts] Is the amount of ice melted in the box containing cylinder A greater than, less than, or equal to the amount of ice melted in the box containing cylinder B? Explain. Physics 1102 Exam 2 2.

Explanation / Answer

cylinder A has fixed piston so work done is zero. do all heat absorbed by this cylinder is used to melt ice.

but in cylinder B , piston is movable so some work is also done by piston so that extra energy by work done melts some extra ice. so ice melts more in B

so ice melts less in A

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