A 1.50-m cylinder of radius 1.10 cm is made of a complicated mixture of materials. Its resistivity

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A 1.50-m cylinder of radius 1.10 cm is made of a complicated mixture of materials. Its resistivity depends on the distance x from the left end and obeys the formula p(x) = a + bx2, where a and b are constants. At the left end, the resistivity is 2.25 X 10-8 Ω. m, while at the right end it is 8.50 X 10-8 Ω • m.
(a) What is the resistance of this rod?
(b) What is the electric field at its midpoint if it carries a 1.75-A current?
(c) If we cut the rod into two 75.0-cm halves, what is the resistance of each half?
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Physics

ISBN: 978-0077339685

2nd edition

Authors: Alan Giambattista, Betty Richardson, Robert Richardson

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