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- You are to connect capacitances C1 and C2, with C1 > C2, toa battery, first individually, then in series, and then in parallel.Rank those arrangements according to the amount of chargestored, greatest first.Consider two long, parallel, and oppositely charged wires of radius r with their centers separated by a distance D that is much larger than r. Assuming the charge is distributed uniformly on the surface of each wire, show that the capacitance per unit length of this pair of wires is (C)/(ℓ) = (π∈0)/(ln (D/r))In one of the classic nuclear physics experiments at the beginning of the 20th century, an alpha particle was accelerated towards a gold nucleus and its path was substantially deflected by the Coulomb interaction. If the initial kinetic energy of the doubly charged alpha nucleus was 5.17 MeV, how close to the gold nucleus (79 protons) could it come before being turned around? (m)
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- Find the equivalent capacitance (in pF) for the combination of capacitors below. C1=141 pF, C2=199 pF, and C3=71 pF.A 100 pF, 100 kV concentric spherical capacitor with gas insulation with dielectric constant Ɛ=8,854 pF/m and puncture resistance Ed=250 kV/cm is desired to be made. Calculate the radii of the inner and outer sphere. ANSWERS: r1=6 cm r2=6.43 cmthe capacitor discharged (V = 0, Q = 0) Should you close the switch? Why or why not?