Calculate the average surface density of electrons on a sphere of radius 2.79 cm if it has a total charge of 69.1 μC. You may assume that the charge of an electron is exactly 1.60x10-19 C. Number of Electrons per m² = 4.42e16

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Chapter5: Electric Charges And Fields
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I need help worh both questions please. 

Calculate the average surface density of electrons on a sphere of radius 2.79 cm if it has a total charge of 69.1 μC. You may
assume that the charge of an electron is exactly 1.60x10-¹⁹ C.
Number of Electrons per m²
=
4.42e16
Transcribed Image Text:Calculate the average surface density of electrons on a sphere of radius 2.79 cm if it has a total charge of 69.1 μC. You may assume that the charge of an electron is exactly 1.60x10-¹⁹ C. Number of Electrons per m² = 4.42e16
A charge of 6.19 μC moves a distance of 0.49 m inside the electric field generated by a parallel plate capacitor. The field inside
has a strength of 3670 N/C. Calculate both the change in potential and the change in potential energy for this motion. You may
give both answers as positive numbers.
Change in Potential =
1800
Change in Potential Energy =
Volts
0.011
Joules
Transcribed Image Text:A charge of 6.19 μC moves a distance of 0.49 m inside the electric field generated by a parallel plate capacitor. The field inside has a strength of 3670 N/C. Calculate both the change in potential and the change in potential energy for this motion. You may give both answers as positive numbers. Change in Potential = 1800 Change in Potential Energy = Volts 0.011 Joules
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