11. Work done in an isobaric process by an ideal gas is (A)nRT2ln(V₂/V₁) (B)nRT2(1-V₁/V₂) (C)nRT₂ ln(V₁/V₂) (D)nRT₁(1-V₂/V₁) (E)nRT₁(1-V₂/V₁)

5. A solid wheel with mass M, radius R, and rotational inertia MR²/2, rolls without sliding on a horizontal surface. A horizontal force F is applied to the axle and the center of mass has an acceleration a. The magnitudes of the applied force F and the frictional force f of the surface, respectively, are: (A)F = Ma, f = 0 (B)F = Ma, f = Ma/2 (C)F = 2Ma, f = Ma (D)F = 2Ma, f = Ma/2 (E)F = 3Ma/2, f = Ma/2

11. Work done in an isobaric process by an ideal gas is
(A)nRT₂ln(V₂/V₁)
(B)nRT₂(1-V₁/V₂)
(C)nRT₂ ln(V₁/V₂)
(D)nRT₁(1-V₂/V₁)
(E)nRT₁(1-V₂/V₁)

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