Question

(a) Find the electric potential difference ΔVe required to stop a proton (called a "stopping potential")...

(a) Find the electric potential difference ΔVe required to stop a proton (called a "stopping potential") moving with an initial speed of 3.85x107 m/s. (b) Would an electron traveling at the same speed require a greater or lesser magnitude of electric potential difference? Explain.

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