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A 2.02 x 10-9 C charge has coordinates x = 0, y =-2.00; a 3.12 x 10-9 C charge has coordinates x = 3.00, y-0; and a-4.95 x 10-9 C charge has coordinates x = 3.00, y 4.00, where all distances are in crn Determine magnitude and direction for the eetri ned at the ori in and the stantaneous acceleration of a proton placed at the origin. (a) Determine the magnitude and direction for the electric field at the origin (measure the angle counterclockwise from the positive x-axis) magnitude direction Determine the magnitude and direction for the in (b) the positive x-axis). magnitude direction stantaneous acceleration of a proton placed at the origin (measure the angle counterclockwise fromm

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Answer #1

Magnitude of Electric field due to charge q at distance r from it, E = kq/r^2.

Direction of field due to +ve charge is radially away from it and due -ve charge is radially inward towards charge.

Hence electric field of three charges E1, E2 and E3 are as shown.

es ブ 万万 .. 4:54 х tom NI (3 x 1o22 九 Co,-) 1010 El e

Force on +ve charge is in the direction of electric field. Hence direction of acceleration of proton, is same as that of electric field , that is 109 deg with +ve x axis counterclockwise.

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