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A. Calculate the speed of a proton after it accelerates from rest through a potential difference...

A. Calculate the speed of a proton after it accelerates from rest through a potential difference of 300 V .

B. Calculate the speed of an electron after it accelerates from rest through a potential difference of 300 V

C. The electric potential 1.9 mm from a point charge q is 3.5×104 V . What is the value of q?

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