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An object with charge q = −4.00×10−9 C is placed in a region of uniform electric...

An object with charge q = −4.00×10−9 C is placed in a region of uniform electric field and is released from rest at point A. After the charge has moved to point B, 0.500 m to the right, it has kinetic energy 5.00×10−7 J .

A)If the electric potential at point A is +30.0 V, what is the electric potential at point B?

B)What is the magnitude of the electric field?

C)What is the direction of the electric field?

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