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3. An electron with a mass of 9.11 X 10^-31 kg is moving at a speed of 2.19 X 10 m/s. What is the kinetic energy of the electron?
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3. An electron with a mass of 9.11 X 10^-31 kg is moving at a speed of 2.19 X 10 m/s. What is the kinetic energy of the electron?

User Jim Horng
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1 Answer

3 votes

Answer:


2.18* 10^(-30) \:J

Step-by-step explanation:


K.E._(Electron)= (1)/(2) mv^2 \\\\</p><p>= (1)/(2) * 9.11* 10^(-31)* (2.19* 10)^2 \\\\</p><p>=4.555* 10^(-31)* 4.7961* 10^2 \\\\</p><p>=4.555* 10^(-31+2)* 4.7961 \\\\</p><p>=21.8462355* 10^(-29)\\</p><p>=2.18462355* 10^(-30)\\</p><p>=2.18* 10^(-30) \:J\\

User David Elliman
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