saplinglearning com d state College PHms 202 Spring17 KALK: Hw due 1/25 PHYS 202

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saplinglearning com d state College PHms 202 Spring17 KALK: Hw due 1/25 PHYS 202 Spring17 KALK I Activities and Due Dates I HW due 1/25 Not set Sol 100 Grade book Print calaulator Periodic Table Question 8 of 15 University Physics presented by Saping Leaming Most workers in nanotechnology are actively monitored for excess static charge The human body acts like an insulator as one walks across a carpet, nC per step What charge buildup will a worker in a manufacturing plant accumulate walks 15 steps? How many electrons are present in that amount of charge? electrons If a delicate manufacturing process can be damaged by an electrical discharge greater than 10 what is the maximum number of steps that any worker should be alowed to take before touching the e Previous e check Answer ONext Ext terms of use

Explanation / Answer

charge collectd per step -50 nC

charge collected in 15 steps = -50*15 = 750 nC

charge of each electron = 1.6 e-19 C

number of electrons present in the charge = 750e-9/1.6e-19 = 468.75 e+10

1012 electrons   = 1.6e-19 *1.0e+12 = 1.6e-7 C

charge collected per step = 15.0 e-9C

maximum number of steps allowed = 1.6e-7/15.0e-9 = 106 steps.

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