2. A spherical shell of radius R has charge Q uniformly distributed over its surface. Find the energy stored in this charge distribution. (A) (B)(C)(D) (E)

複選題19. Which ones of the following statements are the postulates of special relativity? (A) E = mc², where E is energy, m is mass, and c is speed of light in vacuum. (B) All physical laws have the same form in all inertial reference frames. (C) The space-time transformation obeys the Lorentz transformation. (D) The speed of light in vacuum is the same in all inertial reference frames. (E) No object can moves with a speed higher than the speed of light in vacuum.

2. A spherical shell of radius R has charge Q uniformly distributed over its surface. Find the energy stored in this charge distribution.
(A)
(B)
(C)
(D)
(E)

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