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anonymous
 one year ago
Two tiny, spherical water drops, with identical charges of 2.80 1017 C, have a centertocenter separation of 2.0 cm.
(a) What is the magnitude of the electrostatic force acting between them?
N
(b) How many excess electrons are on each drop, giving it its charge imbalance?
electrons
anonymous
 one year ago
Two tiny, spherical water drops, with identical charges of 2.80 1017 C, have a centertocenter separation of 2.0 cm. (a) What is the magnitude of the electrostatic force acting between them? N (b) How many excess electrons are on each drop, giving it its charge imbalance? electrons

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johnweldon1993
 one year ago
Best ResponseYou've already chosen the best response.1The force acting between them would be \[\large F = k\frac{q_1\times q_2}{r^2}\] However, here \(\large q_1 = q_2\) so lets just write \[\large F = k\frac{q^2}{r^2}\] So for part A we would have \[\large F = 9\times 10^9 \frac{Nm^2}{C^2}\times \frac{(2.80\times 10^{17}C)^2}{(0.02m)^2} = ?\] Part B, We can use the expression \(\large ne = q\) where e = the charge of an electron and q is the net charge So we would solve that for 'n' using the fact that we are given the net charge in the question \[\large n = \frac{q}{e}\] \[\large n = \frac{2.80\times 10^{17}C}{1.6\times 10^{19}C}=?\]
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