Author Question: An unknown particle in an accelerator moving at a speed of 2.00 108 m/s has a measured total energy ... (Read 55 times)

saraeharris · **on:** Jul 28, 2018

An unknown particle in an accelerator moving at a speed of 2.00 108 m/s has a measured total energy of 1.22 10-9 J. What is its mass? (c = 3.00 108 m/s)
a. 1.49 10-26 kg
c. 0.810 10-26 kg
b. 0.650 10-26 kg
d. 1.01 10-26 kg

Question 2

If a proton with mass 1.67 10-27 kg moves in an accelerator such that its total energy is two times its rest energy, what is its speed? (c = 3.00 108 m/s)
a. 1.00 108 m/s
c. 1.41 108 m/s
b. 2.83 108 m/s
d. 2.60 108 m/s