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A proton follows the path shown in figure P21.74. Its initial speed is ??=1.9∗106??.Vo=1.9∗10^6 m/s.what is...

A proton follows the path shown in figure P21.74. Its initial speed is ??=1.9∗106??.Vo=1.9∗10^6 m/s.what is the protons speed as it passes through point P?

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