An alpha particle (charge 2e) is sent at high speed toward an atomic nucleus. The electric force acting on the alpha particle is 79.8 N when it is 2.29 x 10 (-14) m away from the nucleus. What is the charge on the atomic nucleus? (e = 1.60 x 10 (-19) C, Kc = 9 x 10 (9) N•m (2) / c (2)
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