Hello, would you please solve the Physics 2 problems ? A point charge q 1 = -6.1

Question

Hello, would you please solve the Physics 2 problems ?

A point charge q1 = -6.1 ?C is located at the center of a thick conducting shell of inner radius a = 2.8 cm and outer radius b = 4.8 cm, The conducting shell has a net charge of q2 = 2.6 ?C.

1-What is ?b, the surface charge density at the outer edge of the shell?

2-What is ?a, the surface charge density at the inner edge of the shell?

3-For how many values of x: (4.8 cm < x < infinity) is it true that Ex = 0?

-NONE      -ONE      -MORE THAN ONE

4-Define E2 to be equal to the magnitude of the electic field at r = 1.4 cm when the charge on the outer shell (q2) is equal to 2.6 ?C. Define Eo to be equal to the magnitude of the electric field at r = 1.4 cm if the charge on the outer shell (q2) were changed to 0. Compare E2 and Eo.

-E2 < Eo        -E2 = Eo          -E2 > Eo

Hello, would you please solve the Physics 2 problems ? A point charge q1 = -6.1 ?C is located at the center of a thick conducting shell of inner radius a = 2.8 cm and outer radius b = 4.8 cm, The conducting shell has a net charge of q2 = 2.6 ?C. What is ?b, the surface charge density at the outer edge of the shell? What is ?a, the surface charge density at the inner edge of the shell? For how many values of x: (4.8 cm

Explanation / Answer

1. surface charge density at the outer edge of the shell = -3.5/4 pie 4.8^2 = -0.01209 ?C/cm^2

2. the surface charge density at the inner edge of the shell = 6.1/4 pie2.8^2 =0.0619 ?C/cm^2

3.none

4. E2 = Eo. , gauss law

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