A-3.00 nC point charge is at the origin, and a second 650 nC point charge is on

Question

A-3.00 nC point charge is at the origin, and a second 650 nC point charge is on the z-axis at 0800 m Part A Find the electric field (magnitude and direction) at point on the r-axis at z 0.200 m Express your answer with the appropriate units. Enter positive value if the field is in the positive z-direction and negative value if the field is in the negative z-direction EValue Units Submit Request Answer Part B Find the electric field (magnitude and direction) at point onthe z-axis at: 1.20m. Expres units. Enter positive value if the field is in the positive z-direction and negative value if the field is in the negative z-direction. s your answer with the appropriate EValue Units Part C Find the electric field (magnitude and direction) at point on the z-axis at0.200 m. Express your answer with the appropriate units. Enter positive value if the field is in the positive z-direction and negative value if the field is in the negative a-direction. EValue Units Submit Request Answer Part D Complete previous pare(s) Part E Complete previous parels) Part F Complete previous part(s)

Explanation / Answer

A)

E1 = kq1/r^2 = (9 x 10^9)(3 x 10^-9)/0.04 = - 675 N/C

E2 = kq2/r^2 = (9 x 10^9)(6.5 x 10^-9)/(0.8-0.2)^2 = 162.5 N/C

Net field, E = E1 + E2 = - 512.5 N/C (towards E1) left

B)

E1 = (9 x 10^9)(3 x 10^-9)/1.2^2 = - 18.75 N/C

E2 = (9 x 10^9)(6.5 x 10^-9)/(0.16) = - 365.63 N/C

Net field, E = E1 + E2 = 384.38 N/C (towards left)

C)

E1 = kq1/0.2^2 = 675 N/C

E2 = (9 x 10^9)(6.5 x 10^-9) = 58.5 N/C

Net field, E = E1 + E2 = 733.5 N/C (towards right) positive

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