If J = (2 cos θ + sin θ ) A/m2 , calculate the current passing through i) A hemispherical shell of radius 20 cm, 0 < θ < π/2, 0 < Ф < 2π ii) A spherical shell of radius 10 cm
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Pressure force acts in all directions at a point inside a gas. At the surface of a gas, the pressure force acts perpendicular (at right angle) to the surface.
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