The unifying concepts in physics are the conservation laws.To preserve these laws in nuclear processes,it became necessary to postulate the existence of
A)the positron.
B)particle spin.
C)space quantization.
D)the neutrino.
E)the neutron.

Question

Quizplus · Accepted Answer

The conservation laws in nuclear processes require the conservation of charge, mass-energy, linear momentum, and angular momentum. In some nuclear processes, there seemed to be a violation of the conservation of energy, which led to the postulation of the existence of the neutrino, a neutral particle with very small mass that could carry away the missing energy in these processes. Thus, choice D, the neutrino, is the best choice.

The Unifying Concepts in Physics Are the Conservation Laws