1)In a region in which the charge distribution is 0<=r<=10m in the free space, the charge density is 2rnC/m^3, and in ot

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1)In a region in which the charge distribution is
0<=r<=10m in the free space, the charge density is 2rnC/m^3,
and in other regions, the charge density is 0. Find E at r = 2m and
r = 12m
2)Find the divergence of the next vector field and calculate its
value at the given point.
1.(1,-2,3) A=yza(x) + 4xya(y) + ya(z)
2.(5, π/2,1) B=ρzsinø a(ρ) + 3ρz^2cosø a(ø)
3.(1,π/6,π/3) C=2rcosθcosø a(r) + r^1/2 a(ø)
3) Calculate D=ρ^2(cosø)^2 a(ρ) + zsinø a(ø) through the
closed surface of a cylinder with 0<=z<=1 and ρ=4