a) Find the potential difference Ve required tostop an electronn (called a \"sto

Question

a) Find the potential difference Ve required tostop an electronn (called a "stopping potential") moving with aninitial speed of 2.51 x 10^7 m/s.    = ? kV c) Find a symbolic expression for the ratio of the protonstopping potential and the electron stopping potential, Vp /Ve. The answer should be in terms of the proton mass Mp andelectron mass Me. (Use m_p and m_e for the masses a) Find the potential difference Ve required tostop an electronn (called a "stopping potential") moving with aninitial speed of 2.51 x 10^7 m/s.    = ? kV c) Find a symbolic expression for the ratio of the protonstopping potential and the electron stopping potential, Vp /Ve. The answer should be in terms of the proton mass Mp andelectron mass Me. (Use m_p and m_e for the masses

Explanation / Answer

Initial speed v = 2.51 x 10^7 m/s we know K.E of the electron = P.E            (1/ 2) m v 2 = V q So, potential energy V = ( 1/2 q ) m v2       where m = mass of the electron = 9.1 * 10 -31kg            q= charge of electron = 1.6 * 10 -19 C Substitue values weget answers                    

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