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The Kinetic Energy of a Moving Object, in Joules (J) KE=12mv2K E=\frac{1}{2} m v^{2}

Question 90

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The kinetic energy of a moving object, in Joules (J), is given by the formula KE=12mv2K E=\frac{1}{2} m v^{2} , where mm is the mass of the object and vv is its velocity. What is the kinetic energy of an electron traveling at 3.821×3.821 \times 105 m/s10^{5} \mathrm{~m} / \mathrm{s} if the mass of an electron is 9.11×1031 kg9.11 \times 10^{-31} \mathrm{~kg} ?

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