What is the proton’s speed at point b?

A proton's speed as it passes point A is 50000 m/sA proton’s speed as it passes point A is 50000 m/s . It follows the trajectory shown in the figure.(Figure 1)What is the proton’s speed at point B?

Answer

Work done by a proton is, W = qV Here, W is the work done, q is the charge on proton and V is the potential. W = 9V = (1.602

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