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Need help with homeworkby gmuniz
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#1
Sep1805, 04:02 PM

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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? 


#2
Sep1805, 04:44 PM

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