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Verified answer
Fisika AtomKelas XII SMA kurikulum 2013 revisi 2016.
v = e √[k / (mr)]
= (1,6 x 10⁻¹⁹ C) √{(9 x 10⁹ Nm²/C²) / [(9,1 x 10⁻³¹ kg)(5,3 x 10⁻¹¹ m)]}
≈ 2,19 x 10⁶ ms⁻¹