37. A solid nonconducting sphere of radius R carries a uniform charge density throughout its volume. ial distance r1= R/4 from the center, the electric field has a magnitude E0. magnitude of the electric field at a radial distance r2 = 2R ?
(A) E0/8
(B) E0/4
(C) E0/2
(D)E0
(E)2E0
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統計: A(2), B(0), C(0), D(6), E(2) #3224683
統計: A(2), B(0), C(0), D(6), E(2) #3224683