An Unknown Particle in an Accelerator Moving at a Speed

question 43

Multiple Choice

An unknown particle in an accelerator moving at a speed of 2.00 x 10⁸ m/s has a measured total energy of 1.80 x 10^-9 J.What is its mass? (c = 3.00 x 10⁸ m/s)

• A)0.650 x 10^-26 kg
• B)0.810 x 10^-26 kg
• C)1.01 x 10^-26 kg
• D)1.49 x 10^-26 kg

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