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6, (HRw-7, #23.49) A solid sphere of radius a = 2.00 cm has an uniform charge q1 5.00 fc, That sphere is concentric with a spherical conducting shell of inner radius b = 2.00 a and outer radius c = 2.4 a. A shell has a charge of 2-5.00 fC. Find the electric field and potentials in the regions: (a) 0<r<a, (b)a<r<b (d) r> c Graph E (r) and V (r) 7, ( HRV-7 # 24.46) A charged particle ( either electron or proton) is moving rightward between two parallel charged pates separated by distance d 2.00 mm. The plate potentials are Vs--70.0 V and V2 50.0 V. The particle is slowing down from an initial speed of 90.0 km/sat the left plate. (a) Is the particle electron or proton? (b) What is its speed just it reaches a right plate?
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6x10) (5x10-5) 02)3 137:5106 o.o8 S.

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