what is the correct answer? 00 Question 15 of 18 Map University Physics esten Ta

Question

what is the correct answer?

00 Question 15 of 18 Map University Physics esten Tauck presented by Sapling Learning Most workers in nanotechnology are actively monitored for excess static charge buildup. The human body acts like an insulator as one walks across a carpet, collecting -50 nC per step. What charge buildup will a worker in a manufacturing plant accumulate if she walks 29 steps? Number nC How many electrons are present in that amount of charge? Number electrons If a delicate manufacturing process can be damaged by an electrical discharge greater than what is the maximum number of steps that any worker should be allowed to take before touching the components? Number steps

Explanation / Answer

a. Per step collects -50nC

in 29 steps accumulates = -50 nC x 29 = -1450 nC

so answer is -1450 nC

b. charge of an electron = -1.6 x 10-19 C

no of electrons = -1450 x 10 -9 C / (- 1.6 x 10-19) C =90625 x 108

c. Maximum charge can be accumulated = charge of an electron x no of electrons

=- 1.6 x 10-19 x 1012 =-160 nC

per step the worker collects - 50 nC

so maximum no of steps allowed = -160 /-50 = 3 steps

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