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Question: Sphere 1 with radius R1 has positive charge q. Sphere 2 with radius 2.00 R1 is far from sphere 1 and initially uncharged. After the separated spheres are connected with a wire thin enough to retain only negligible charge,
(a) Is potential V1 of sphere 1 greater than, less than, or equal to potential V2 of sphere 2? What fraction of q ends up on?
(b) Sphere 1 and
(c) Sphere 2?
(d) What is the ratio s1/s2 of the surface charge densities of the spheres?
A cylinderical wooden log rolls (without slipping) down a small ramp. The log has a radius of 15 cm, a length of 2.0 m, and a mass of 78 kg. What is the log's total kinetic energy at the bottom of the ramp
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