Question
a very small ball has a mass of 5 x 10^-3 kg and a charge of 4x10^-6C(microC). What magnitude electric field directed upwad will balance the weight of the ball?
Answers
bobpursley
force electric=mg
Eq=mg
E=mg/q
Eq=mg
E=mg/q
1.2 x 10^4 N/C
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