•38 Figure 22-58a shows a circular disk that is uniformly charged. The central z axis is perpendicular to the disk face, with the origin at the disk. Figure 22-58b gives the magnitude of the electric field along that axis in terms of the maximum magnitude Em at the disk surface. The z axis scale is set by z, = 8.0 cm.What is the radius of the disk? Em ntre 0.5Em 2 z (cm) 8rm (a) (b)

The electric field outside the axis of a rodA 1.5m long rod carries a uniformly distributed charge of -3uC. Point P is 0.5m from one end of the rod in the direction parallel to the rod and 0.5m in the direction perpendicular to the rod (see image). Determine the electric field generated by the rod at point P.

Review | Const Imagine a right angle triangle with two equal sides of 10 cm. Two equal charges of +10μC are placed in the vertices corresponding to the 45° angles. A negative, -20μC charge is placed at the 90° vertex. Find the electric field in the middle of the hypotenuse. You need to provide the magnitude of the field and the direction. For the direction use the angle between the electric field and the hypotenuse (the one less than 90°). Part A - What is the magnitude of the field at the point in the midle of the hypothenuse? μA Units Request Answer Part B - What is the angle between the total field and the hypothenuse? (If the angle is not 90 degress, give the angle which is less than 90 degrees) < Return to Assignment Provide Feedback Value Submit

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2D Electric Fields OPEN d, 2₁ Two point charges Q₁ = 4.58 nC and Q₂-2.4 nC are shown in the figure. Q: is located at (81.1 cm, 0.0 cm) while Q₂ is at (0.0 cm, -75.6 cm). (A) Find the components (E, and E,) for the electric field at (A) which is at the origin. E, - Ey= (B) Find the magnitude and angle of the electric field vector E Note: Angles are measured from the positive x-axis in the counter-clockwise direction. |E|- 4. 08- degrees. I am finished.