An unknown particle in an accelerator moving at a speed of 2.00 ...

[saraeharris]

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

[Tonny]

Answer to Question 1

D

Answer to Question 2

D

[saraeharris]

Gracias!

[juliaf]

Excellent