The dot in the figure represents the initial state of a gas, and the vertical li
ID: 1560404 • Letter: T
Question
The dot in the figure represents the initial state of a gas, and the vertical line through the dot divides the pV-diagram into regions 1 and 2. For the following processes, determine whether the work W done by the gas is positive, negative or zero: the gas moves up along the vertical line, it moves down along the vertical line, it moves to anywhere in regions 1, and it moves to anywhere in region 2. Question 1 continued: The dot in Fig (b) represents the initial state of a gas, and the isotherm through the dot divides the pV-diagram into regions 1 and 2. For the following processes, determine whether the change Delta E_int in the internal energy of the gas is positive, negative, or zero: the gas move up along the isotherm, it moves down along the isotherm, it moves to anywhere in region 1, and it moves to anywhere in region 2. The dot in Fig (c) represents the initial state of a gas, and the adiabat through the dot divides the pV-diagram into regions 1 and 2. For the following processes, determine whether the corresponding heat Q is positive, negative, or zero: the gas move up along the adiabat, it moves down along the adiabat, it moves to anywhere in region 1, and it moves to anywhere in region 2.Explanation / Answer
Q2) Work done by the gas = PV
A) if the gas moves up along the vertical line, the work done by the gas will be zero because no change in volume takes place.
B) if the gas moves down along the vertical line, the work done by the gas will be zero again because no change in volume takes place.
C) if the gas moves in the region 1 then the final volume of the gas is lesser than initial means gas is getting compressed so work done by the gas will be negative.
D) if the gas moves in the region 2 then the final volume of the gas is more than initial means gas is expanding so work done by the gas will be positive.
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