Physics
Physics, 18.10.2019 06:40, brejahboo

A1.50 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 rho( x ) = a + bx^2, where a and b are constants. at the left end, the resistivity is 2.25 10^-8 omega*m, while at the right end it is 8.50 x 10^-8 omega*m.

what is the resistance of this rod?

what is the electric field at its midpoint if it carries a 1.75 a current?

if we cut the rod into two 75.0 cm halves, what is the resistance of each half?

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