d Date: 5/23/2020 5:00:00 PM etheexpertta.com Sing given quantities and the unit ectors i andj. Grade Summary Deductions Parential 1000 0 +++++ + +

A circular ring of radius 27 cm and total charge 600 μC is centered at the origin as shown in the figure below. If the charge is distributed uniformly around the ring, what is the electric field at the origin? (Enter the magnitude of the electric field.) N/C y B x

A charge distribution creates the following electric field throughout all space: E(r, 0, q) = (3/r) (r hat) + 2 sin cos sin 0(theta hat) + sin cos p (phi hat). Given this electric field, calculate the charge density at location (r, 0, p) = (ab.c).

Consider two thin disks, of negligible thickness, of radius R oriented perpendicular to the x axis such that the x axis runs through the center of each disk. The disk centered at x=0 has positive charge density η, and the disk centered at x=a has negative charge density −η, where the charge density is charge per unit area.   What is the magnitude E of the electric field at the point on the x axis with x coordinate a/2? Express your answer in terms of η, R, a, and the permittivity of free space ϵ0.

E ↑ Απεργια This problem checks your understanding of the term in the equation for the electric field due to a point charge, Consider a charged particle at a point S whose coordinates are (4 m, 2 m, 6 m). We would like to find the electric field vector at a point P whose coordinates are (7 m, 8 m, 1 m). The "unit vector" is a vector that points from S to P that has length of 1 (or "unity"). What is its y component, in meters? (Report your answer to one decimal place.)

|K1|K2 EEE =0 OM OR The figure shows three parallel plates. The two spaces between the plates are filled with different dielectric materials with different constants (K, and K2). The electric field in both dielectric media turns out be equal; E is the rightward component of the electric field in those two regions. The field on the right of the rightmost plate is observed to be 0. Based on these, find the surface charge densities on the middle plate, oM, and the rightmost plate, or. Note: Gauss' law in the presence of dielectric materials: feẼ - dà = Qene: OM OR =

The surface charge density (eta) h of an infinite charged plane is -2.0 x 10-6 C/m2. A proton is shot straight away from the plane at 2.0 x 106 m/s. Make a sketch of the situation. How far does the proton travel before reaching its turning point?

A cylindrical distribution of charge ρ = α /√ r where α = 2 µC/m 5/2 extends from 0 cm to 9.3 cm . Concentric with this is a dielectric shell with 5.44 of inner radius 16.6 cm and outer radius 24.9 cm . What is the electric field at 3.53 cm ?

esc The nucleus of a 125 Xe atom (an isotope of the element xenon with mass 125 u) is 6.0 fm in diameter. It has 54 protons and charge q = +54e. R 2 R F2 W # 3 80 E $ 4 R Part A What is the electric force on a proton 2.6 fm from the surface of the nucleus? Hint: Treat the spherical nucleus as a point charge. Express your answer with the appropriate units. F= 8.64 Part B μà 1 Submit Previous Answers Request Answer % 5 X Incorrect; Try Again; 4 attempts remaining F5 What is the proton's acceleration? Express your answer with the appropriate units. Value T → HA N 6 C FIC ? Units MacBook Air Y & 7 U * 8 FB ( 9 F9 0 0 P + Review

A hemispherical surface of radius b = 94.5 m is fixed in a uniform electric field of magnitude Eo = 5.12 V/m, as shown in the figure. The x axis points out of the screen. azimuthal angle. Use as your outward-pointing unit normal vector. ↑ Enter the general expression for an infinitesimal area element, dÃ, in spherical coordinates (r, 0, 4), where is the polar angle and is the Calculate the electric flux, in volt meters, through the hemisphere. note: Ē=Ek