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ID: 2030680 • Letter: E

Question

ecure www.webassign.net/web/Student/Assignment-Responses/submit?dep 18192728#03 'iui iuCia w, "nu urc.uuui Cicti.C P. Yp= 6520 he work needed to bring the 3.50 HC m infinity to P. W = PE = q3 = nli-Va W (3.50 x 106 C)(Vp-0) work-energy theorem, with Equation W= .02282 Exercise 16.4 Hints: Getting Started I I'm Stuck Suppose a charge of -2.10 uC is at the origin and a charge of 3.20 uC is at the point (0, 3.00) m. (a) Find the electric potential at (4.00, 0) m, assuming the electric potential is zero at infinity. (b)Find the work necessary to b point (4.00, 0) m. g a 3.suc charge from infinity to the Submit Answer Save Progress Pracice Another Version SN Wallizadeh Isle-IMG 1272.JP pic 3 jpg coffee Role of woman paper FI FS F7

Explanation / Answer

a) at the point (4 , 0)

electric potential = electric potential due to -2.1 uC + electric potential due to 3.2 uC

electric potential = 9 *10^9 * 10^-6 * (-2.1/4 + 3.2/sqrt(3^2 + 4^2))

electric potential = 1035 V

the potential at the point (4 ,0 ) is 1035 V

b)

for the 3.5 uC Charge

work needed = V * Q

work needed = 1035 * 3.5 *10^-6

work needed = 3.62 *10^-3 J