20. Singly ionized chlorine atoms of 35 amu and 37 amu, traveling with speed 2.0×10⁵ m/sec, enter perpendicularly a uniform magnetic field of 0.50 tesla. After bending through 180°, the atoms strike a photographic film. What is the separation distance between the two spots on the film? (1.00 amu = 1.67×10⁻²⁷ kg)
(A) 2.1 cm
(B) 3.7 cm
(C) 1.7 cm
(D) 4.5 cm
(E) 5.8 cm
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統計: 尚無統計資料
統計: 尚無統計資料