If we accelerate a radioactive isotope of an element in a ...

[krzymel]

If we accelerate a radioactive isotope of an element in a particle accelerator to a speed close to that of light, what would its observed mass be compared to its mass at rest?
 
  A) higher
  B) infinite
  C) zero
  D) lower

Question 2

Isotopes of an element have nuclei with
 
  A) the same number of protons, but different numbers of neutrons.
  B) the same number of protons, and the same number of neutrons.
  C) a different number of protons, and a different number of neutrons.
  D) a different number of protons, and the same numbers of neutrons.
  E) the same number of protons, but different numbers of electrons.

[stillxalice]

Answer to Question 1

A

Answer to Question 2

A

[krzymel]

Excellent

[dawsa925]

Gracias!