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A total amount of charge Q is non-uniformly distributed within a solid sphere of radius R. The charge per unit volume in the sphere can be written as=k/r, where k is a constant, and r is the radial distance from the center.
Compute the total energy stored in the charge distribution. In other words: how much work should you do to assemble the non-uniformly charged sphere from charges that were initially at infinity? Express your answer in terms of Q and R.
400 L of water is at 4 oC. If it took a heat 600 seconds to heat this up to 6 oC, what is the power rating of the heater
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A balloon with a radius of 14cm and an electric charge of 3.75x10^-9 C is brought within the electric field of the larger balloon so their centres are 40cm apart. find the magnitude of the electric force exerted by this electric field on the small..
q1. a certain kind of glass has an index of refraction of 1.660 for blue light of wavelength 420 nm and an index of
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