Solving a problem in physics section 1 paragraph 3 ele

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3. The strength of the field formed by a point charge in kerosene (? = 2,1) at a distance r = 2 m from it, is E = 9 V / m. To determine the amount of charge Q and the potential ? of the electric field created by this charge.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use the Formula Editor