Two long, charged, thin-walled, concentric cylindrical shells have radii of 3.4 and 6.1 cm. The charge per unit length is 6.3 x 10" C/mon the inner shell and -9.8 * 10"C/m on the outer shell. What are the (a) magnitude E and (b) direction (radially inward or outward) of the electric field at radial distancer - 4.3 cm? What are (c) E and (d) the direction at r - 8.5 cm? (a) Number i Units V (b) V (c) Number i Units V (d)Current Attempt in Progress A positively charged particle is held at the center of a spherical shell. The figure gives the magnitude E of the electric field versus radial distance r. The scale of the vertical axis is set by E - 13.0 * 107N/C. Approximately, what is the net charge on the shell? Assumers - 4 cm. E (10'N/C) r (cm) Number i UnitsCharge of uniform volume density o = 2.1 nC/m fills an infinite slab between x = -4.7 cm and x = +4.7 cm. What is the magnitude of the electric field at any point with the coordinate (@) x = 3.2 cm and (b) x = 6.9 cm? {a) MNumber n Units v {b) Mumber n Units v our answer is incorrect. A uniformly charged ball (a plasma ball) has a radius of 0.300 m. The electric field on its surface is outward and has a magnitude of 60.0 M/C. Two radial distances (two radii] have a field magnitude of 30 N/C. What is the larger value ra (m)? O p4z4 O 0667 O 0367 0382 O 0781 00523 o034 00283 0560 122