25. What is the maximum radiation pressure exerted by sunlight in space (S = 1350 W/m²) on a highly polished silver surface? (A)1.4×10⁻² Pa (B)0.12 Pa (C)9.0×10⁻⁶ Pa (D)4.5×10⁻⁵ Pa (E)2.3×10⁻⁶ Pa

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

25. What is the maximum radiation pressure exerted by sunlight in space (S = 1350 W/m²) on a highly polished silver surface?
(A)1.4×10⁻² Pa
(B)0.12 Pa
(C)9.0×10⁻⁶ Pa
(D)4.5×10⁻⁵ Pa
(E)2.3×10⁻⁶ Pa

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