Question
answer the questions
The word "fundamental" as in "fundamental particle" in physics means a) the heaviest b) the largest c) not made of anything else d) the smallest The electron a) is a fundamental particle b) has an antimatter partner called a positron c) is not composed of quarks d) all of the above e) none of the above An atom a) is not a fundamental particle b) can now be observed directly c) has an antimatter counterpart d) all of the above A proton contains a) two "up" quarks and a "down" quark b) three "up" quarks c) three "down" quarks d) two "down" quarks and an "up" quark A neutron contains
Explanation / Answer
(1) Fundamental means know further constituent of the particle can be there hence
Not made of anything else
(2) Electron is an fundamental particle.
(3) Is not a fundamental particle
(4) 2 ups and one down quarks