Two Identical Iron Spheres Have Equal Positive Charges and the Force

question 41

Multiple Choice

Two identical iron spheres have equal positive charges and the force between them when they are 1 m apart is 1 N.What percentage of the electrons has been removed from each sphere if each sphere has 1 mole (6 x 10²³) of iron atoms? (k_e = 8.99 x 10⁹ N*m²/C²,the atomic number of iron is 26,and the electron charge is -1.6 x 10^-19 C)

• A)0.001%
• B)0.000 002%
• C)1 x 10^-8 %
• D)4 ´ 10^-10 %

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