Question

The electric field just above the surface of the earth has been measured to be 139 N/C downward. What total charge (sign and magnitude) on the Earth is implied by this measurement

Answer 1

Answer:

156KC

Explanation:

Pls see attached file

Answer 2

156 C is the total charge on the Earth is implied by measurement.

What is Gauss law ?

It states that the electric flux Φ across any closed surface is proportional to the net electric charge q enclosed by the surface;

i.e.  Φ = q/ε0

According to the question,

Electric field of Earth is 139 N/C

ε$_{o}$$= 8.85 *10^{-12} C^{2} /Nm^{2}$

$R_{e} = 6.37 * 10^{6}$

Using the formula by Gauss's Law

Φ = q/ε$_{o}$ = EA

q = ε$_{o}$EA = ε$_{o}$E*r²

= $= 8.85*10^{12} *139*(6.37*10^{6} )^2\\\\= 156,905.9*10^0 = 156C$

Therefore ,

The total charge on the Earth is implied by this measurement is 156 C.

Learn  more about Gauss's Law here:

https://brainly.com/question/14767569

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