O K.
asked • 05/30/21Two electrons start at rest with a separation of 5.0×10ˆ-12m. Once released, the electrons accelerate away from each other. Calculate the speed of each electron when they are a very large distance apart.
Yefim S. answered • 05/30/21
Math Tutor with Experience
ke2/r = mv2/2; v = [2ke2/(mr)]1/2; k ≈ 8.988×109 N⋅m2⋅C−2, e = 1.602·10-19C, m = 9.109·10-31kg
v = [2·8.988·109·(1.602·10-19)2/(9.109·10-31·5·10-12)]1/2 = 1.006·107 m/s
Anthony T.
Textbook answers aren't always correct!05/31/21
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O K.
hi, thank you. this is what I tried as well but in my textbook the answer was 7.1*10^6 m/s which confused me.05/31/21