According to modern understanding, protons and neutrons are each composed of
A) three leptons.
B) two fermions.
C) three quarks.
D) four bosons.
C
You might also like to view...
A satellite is in a circular orbit about the Earth at an altitude at which air resistance is negligible. Which of the following statements is true?
a. There is only one force acting on the satellite. b. There are two forces acting on the satellite, and their resultant is zero. c. There are two forces acting on the satellite, and their resultant is not zero. d. There are three forces acting on the satellite. e. None of the preceding statements are correct.
U-235 and Pu-239 are both
A) radioactive isotopes. B) fissionable isotopes. C) heavier than lead. D) all of the above E) none of the above
The viscosity of a liquid with increasing temperature is
(a) The inverse of an Arrhenius relationship. (b) An Arrhenius relationship. (c) A linear increase. (d) A linear decrease.
Which of the following statements correctly describes the law of conservation of energy?
A) Energy can change between many different forms, such as potential, kinetic, and thermal, but it is ultimately destroyed. B) An object always has the same amount of energy. C) The fact that you can fuse hydrogen into helium to produce energy means that helium can be turned into hydrogen to produce energy. D) The total quantity of energy in the universe never changes. E) It is not really possible for an object to gain or lose potential energy because energy cannot be destroyed.