Task 31361.
The ball of radius R = 36 cm, has a positive charge, the bulk density of which depends only on the distance r from its center like p = p0 (1 - r / R), where p0 = 354 nC / m ^ 3. Assuming that the dielectric constant of the sphere e = 2, find: a) the charge of the ball b) module of the electric field inside and outside the sphere as a function of the distance r from the center of the sphere. Construct a graph of the field intensity E (r) on the distance r. Calculate the difference in potential between the center of the ball and its surface.
Detailed solution shorthand terms, formulas and laws used in the decision, the withdrawal of the calculation formula and the response.
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