Consider a square of side r = 4.70 cm with two q = +9.70 μC charges at adjacent corners of the square and two p=-3.00 μC charges at the other corners. +quc +qμC b I cm d PHC - r cm -pμC Find the electric field at the center of the square. Enter a positive value if the electric field is straight down and enter a negative value if the electric field is straight up. N/C

A line of charge runs parallel to a sheet of charge, separated by a distance d = 28 cm. If the charge density of the line of charge is λ = 15 x 10-6 c/m and the charge density of the sheet of charge is o = 12 x 10-6 c/m², find the magnitude of the electric field at the midpoint between them. x 106 N/C E =

A 28-cm long charged wire with a total charge of -84 nC is bent to form three quarters of a circle and placed symmetrically with respect to the axis, as shown in the figure below. y -84 nC € 45 0 45 28 cm Assuming that the charge is uniformly distributed along the length of the wire, what is the magnitude of the electric field in kv/m at the center of this circle? Give your answer correct to two decimal places.

Two 8.00 μC charged particles are located on the x axis. One is at x = 1.00 m, and the other is at x = -1.00 m. (a) Determine the electric field on the y axis at y = 0.400 m. N/CI+ N/C j (b) Calculate the electric force on a -3.00 μC charge placed on the y axis at y = 0.400 m. Ni+ Nj

A square plate of copper with 55.0 cm sides has no net charge and is placed in a region of uniform electric field of 75.0 kN/C directed perpendicularly to the plate. (a) Find the charge density of each face of the plate. |nC/m² nC/m? (b) Find the total charge on each face. nC nC

In the figure a thin glass rod forms a semicircle of radius r = 5.94 cm. Charge is uniformly distributed along the rod, with +q = 4.76 pc in the upper half and -q = -4.76 pC in the lower half. What is the magnitude of the electric field at P, the center of the semicircle? Number i Units + P

A spherical conductor of radius 4.07 mm carries a total charge of 6.23 nC. What is the magnitude of the electric field at a distance of 7.09 mm from the center of the sphere? (k = 1/(4л) = 8.99 × 10⁹ N-m²/C²)

Ggg

Suppose the conducting spherical shell in the figure below carries a charge of 2.80 nC and that a charge of -2.40 nC is at the center of the sphere. If a = 1.80 m and b = 2.30 m, find the electric field at the following. XAX magnitude direction + 7 b a (a) r= 1.50 m magnitude 9.6 direction radially inward (b) r2.20 m 0 (c) r= 2.50 m magnitude 0.576 direction Ⓡ radially outward N/C ✔ N/C The magnitude is zero. ✔ v ✔ N/C (d) What is the charge distribution on the sphere? inner surface outer surface x Your response differs from the correct answer by more than 100 %. nC nC D