Multiple Choice
The weak force
A) acted only during the Big Bang and has no known role in the universe at the present time.
B) holds the quarks together inside a proton or neutron.
C) acts during certain kinds of radioactive decay.
D) attracts the electrons to the nucleus,holding the atom together.
Correct Answer:
Verified
Correct Answer:
Verified
Q66: What is dark energy?<br>A) It is the
Q67: Isotropic means<br>A) viewing a blueshift in one
Q68: The cosmological redshift of the light from
Q69: The Hubble law states that the more
Q70: The cosmological principle holds true for<br>A) very
Q72: The universe has been expanding for billions
Q73: Why did Einstein introduce his cosmological constant
Q74: What is the cosmic microwave background radiation?<br>A)
Q75: In a universe that is uniformly expanding
Q76: Because of the general expansion of space,all