(15 pts.)  Two very large parallel plates measuring 2.0 m x…

(15 pts.)  Two very large parallel plates measuring 2.0 m x 2.0 m are separated by a d = 0.0040m gap.  A power source with potential difference of 180 V is connected across the plates. a)  Find the capacitance of the parallel plates. b)  Find the magnitude of the Electric field between the plates? c)  A disk with a radius of 0.50 m is placed between the plates, such that its area is parallel to the plates (shown with separation d exaggerated.)  Find the total flux through the area of the disk.

(5 pts) Spheres A, B, and C are initially neutral.  Then +19…

(5 pts) Spheres A, B, and C are initially neutral.  Then +19μC of charge is transferred from sphere A to sphere B, and –6μC of charge is transferred from sphere A to sphere C.  After the transfers, how many excess electrons does sphere A have?  (Numerical answer.)

A proton and an alpha particle at rest 3.0nm apart.  The pro…

A proton and an alpha particle at rest 3.0nm apart.  The proton is held in place, while the alpha particle is released from rest.  How fast is the alpha particle moving when it is very far away from the proton?  ( qp = e, mp is given on equation sheet.  qalpha = 2e,  malpha = 4mp..)  (Numerical answer, include units.)

If you forgot to show your blank pages and equation sheet du…

If you forgot to show your blank pages and equation sheet during the room scan, do it now.  Remember to show your work to the webcam just before you exit this test. For the charge distribution shown.  Given Q = 12 μC, and a = 0.40 m, find the net force on charge q­2 due to the other charges.  (Numerical solution.  Remember vectors have direction.)