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The electric field strength depends onl...

The electric field strength depends only on the `x` and `y` coordinates according to the law `E = a (x i + yj) (x^(2) + y^(2))`, where `a` is a constant , `i` and `j` are the unit vectors of the `x` and `y` axes. Find the flux of the vector `E` through a sphere of raidus `R` with its centre at the origin of coordinates.

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