12018 Ch 22 Begin Date: 1/11/2018 12:01:00 AM-Due Date: 1/16/2018 11:59:00 PM En

Question

12018 Ch 22 Begin Date: 1/11/2018 12:01:00 AM-Due Date: 1/16/2018 11:59:00 PM End Date: 1/18/2018 11:59:00 PM (10% Problem 1: Common static electricity involves charges in the range between nanocoulombs and microcoulombs > 50% Part (a) How many electrons are needed to form a charge of Q,--6 nC? Deduction Potential sin 4 5 6 1 2 3 Submissio Attempts ro (1% per att detailed vi acos( atanacotan sinh0 coshO tanh cotanh0 Submit I give up! Feedback: 0% deduction per feedback. Hints:-for a-, deduction, Hints remaining: 50% Part (b) How many electrons must be removed from a neutral object to leave a net charge ofQ2-0.65 C? An cornnt © 2018 Expert TA LLC

Explanation / Answer

a) charge on 1 electron = -1.6*10^-19 C

number of electrons needed = -6*10^-9 / (-1.6*10^-19)

= 3.75*10^10

b) no of electrons to be removed = 0.65*10^-6 / (1.6*10^-19) = 4.0625*10^12

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