- #1

gmuniz

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**#!**A flat sheet is in the shape of a rectangle with sides of length 0.400m and0.600m. the sheet is immersed in a uniform electric field 71.0 N/C that is directed at 20 deg. from the plane of the sheet. Find the magnitude of the electric flux through the sheet?

**A**= L*W= 0.600m*.400.

**E**= 71 N/C

**angle**= 20 deg

**phi = E*A*cos(20 deg)**

I don't know where i am making my mistake?

**#2**a solid sphere with radius 0.460.m carries a net charge of 0.300nC. Find the magnitude of the electric field at a point 0.103 m outside the surface of the sphere?

**A**=4*pi*r^2= 4*pi*(0.460)^2

**E**=(1/4*pi*epsilon_0)*(q/r^2)= (1/(4*pi*epsilon_0))((.300*10^-9)/(0.103^2))

**PHI=E*A**where is my mistake?