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

3. A spherical shell has inner radius R₁, outer radius R₂, and mass M, distributed uniformly throughout the shell. The magnitude of the gravitational force exerted on the shell by a point particle of mass m located a distance d from the center, outside the inner radius and inside the outer radius, is: (A)0 (B)GMm/d² (C)GMm/(R₂²-R₁³) (D)GMm(d³-R₁³)/d²(R₂³-R₁³) (E)GMm/(d²-R₁²)

10. Work done in an isobaric process by an ideal gas is

(A)nRT₂ ln(V₂/V₁)
(B)nRT₂(1-V₁/V₂)
(C)nRT₂ ln(V₁/V₂)
(D)nRT₁(1-V₂/V₁)
(E)nRT₁(1-V₁/V₂)

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