Question 3 only dogs to come over and watch their unauthorized screenings of var

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Question 3 only

dogs to come over and watch their unauthorized screenings of various dog-favorites like Old Yeller, Cujo, and Homeward Bound. Help Cecil determine the capacitance per unit length of a cylindrical capacitor of inner radius Ra, outer radius Rb and length L >s Ra R 2. Gretta is taking their ill gotten earnings to decorate the doghouse. She is putting up a hollow, metal disco ball of radius, R. If the outside is carrying charge, Q, determine the electric potential both inside and outside the sphere Buster is in charge of wiring up the dog's new theatre system (because Cecil and Gretta would rather he be electrocuted than either of them). Help Buster figure out what the effective capacitances are for the following 3. circuits A/3 A/3 A/3 d/3 d/3 d/3 k1 k2 K2 k1 Cecil is the slowest eater of the pack. The other two often try to come eat her food after they have finished their own meals. Cecil has come up with a plan (which is never good). She places 50.0 C on each of their 4. dn ta nnt within 500 m of Cecil? (b) How much total

Explanation / Answer

3] a] this like capacitance in parallel , C total = C1+C2+C3

= k1*(A/3)e0/d + k2*(A/3)e0/d +k3*(A/3)e0/d

= (k1+k2+k3)* Ae0/3d

b] This is like capacitors in series, Ceq = 1/[1/C1+1/C2+1/C3] = 1/[d/(3k1 A e0) + d/(3k2Ae0 ) + d/(3k3 A e0) ]

= 3Ae0 /[d/k1 + d/k2+d/k3]

= (3Ae0/d) *k1k2k3 / (k1k2+k2k3+k3k1)

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