54 o In Fig. 22-61, an electron is shot at an initial speed of Detecting screen Vo = 2.00 x 10° m/s, at angle 6 = 40.0° from an x axis. It moves through a uniform electric field E = (5.00 N/C)j. A screen for de- tecting electrons is positioned par- allel to the y axis, at distance x = 3.00 m. In unit-vector notation, what is the velocity of the electron when it hits the screen? Figure 22-61 Problem 54.

8) In Fig. 23-56, a nonconducting spherical shell of inner radius a= 2 cm and outer radius b= 2.4 cm has (within its thickness) a positive uniform volume charge density p = 2.5nC/m³. In addition, a small ball of charge q = +4.5 nC is located at that center. What are the magnitude and direction of the electric field at radial distances (a) r = 1 cm, (b) r = 2.2 cm and (c) r = 3 cm?

A uniform electric field of magnitude 31.6 N/C is parallel to the x axis. A circular loop of radius 30.7 cm is centered at the origin with the normal to the loop pointing 57.4* above the x axis. 0.344 N-m²/C2 R 0 Calculate the electric flux in, newton squared meters per coulomb, through the loop. To what angle, in degrees from the positive x axis, should the normal of the loop be rotated so that the flux through the loop becomes E

A -12 nC charge is located at  (x,y)=(1.0 cm, 0 cm). What is the electric field at the position (x1,y1)=(5.0 m, 0c cm), (x2,y2)=(-5.0 cm, 0 cm) and   (x3,y3)=(0 cm, 5.0 cm) in component form?Enter the xand y components of the electric field in newtons per coulomb separated by a comma.