What Is the Relativistic Kinetic Energy of an Electron Moving

question 78

Multiple Choice

What is the relativistic kinetic energy of an electron moving at a speed of 2.30 × 10⁸ m/s? (electron mass is 9.11 × 10−³¹ kg and c = 3.00 × 10⁸ m/s)

• A)4.57E-14 J
• B)1.28E-13 J
• C)5.26E-14 J
• D)3.38E-14 J
• E)​8.20E-14 J

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