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https://session.masteringphysics.com/myct/itemview?assignmentProblemID 7523370s&offset; next Phys 134 Introduction to Electricity and Magnetism Homework 03 Problem 23.22 Problem 23.22 Part A Two circular disks spaced 0.50 mm apart form a parallelplate What are the diameters of the disks? capacitor. Transferring 150 x10" electrons from one disk to the Express your answer with the appropriate units. other causes the electric field strength to be 3.70 x103 N/C Da Value Units Submit My Answers Give Up

Explanation / Answer

step;1

Given that

the electric field E=3.7*10^5 N/c

charge Q=1.5*10^9*1.6*10^-19=2.4*10^-10 C

distance d=0.5 mm=5*10^-4 m

step;2

now we find the diameter of the disks

3.7*10^5=9*10^9*2.4*10^-10*5*10^-4/(a^2+(5*10^-4)^2)^3/2

3.7*10^5=108*10^-5/(a^2+(5*10^-4)^2)3/2

(a^2+(5*10^-4)^3/2=29.2*10^-10

a^2+(5*10^-4)^2=(29.2*10^-10)^2/3

a^2+25*10^-8=96*10^-8

a^2=(96-25)*10^-8

a=8.43*10^-4 m

radius r=0.834 mm

diameter D=2*0.834=1.668 mm

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