A. protons and neutrons
B. neutrons and electrons
C. protons and electrons
D. protons, electrons and neutrons

Correct Answer: Option A

A. protons and neutrons

SEE ALSO  A ball is projected horizontally from the top of a hill with a velocity of 20m/s. If it reaches the ground 4 seconds later, what is the height of the hill? (g = 10m/s²)

Copyright warnings! Do not copy.