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A certain moving electron has a kinetic energy of 1.01 × 10−19 J. A. ) Calculate...

A certain moving electron has a kinetic energy of 1.01 × 10−19 J.

A. ) Calculate the speed necessary for the electron to have this energy. The mass of an electron is 9.109 × 10−31 kg. Answer in units of m/s.

B.) Calculate the speed of a proton having a kinetic energy of 1.01 × 10−19 J and a mass of 1.673 × 10−27 kg. Answer in units of m/s.

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Answer #1

A) The kinetic energy of an electron is The speed necessary for the electron is 2K 2(1.01x10-19) 9.109x1031 4.709x 10 m/s B) The kinetic energy of an electron is The speed necessary for the electron is 2K 2(1.01x10-19 1.673x101.099x10 m/s

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