The stars farther than 20 000 LY from the center of the Milky Way are traveling too fast to be bound to the galaxy by the observed mass of the galaxy.Which of the following are currently being investigated as possible explanations of this?
A) neutrino mass
B) WIMPs
C) Newtonian dynamics are not quite correct.
D) all of the above
Correct Answer:
Verified
Q76: Mesons are always composed of
A)two quarks,one being
Q77: The strangeness of an anti-proton is
A)+1.
B)0.
C)-1.
D)-2.
Q78: When considering the law of conservation of
Q79: Of the quarks u,d,c,s,t,and b,which have positive
Q80: The law of conservation of strangeness tells
Q82: The cosmic background radiation appears compatible with
Q83: The microwave background radiation
A)represents the leftover glow
Q84: What is the "cosmological constant?"
A)The universe has
Q85: Processes in which one type of quark
Q86: What is the particle referred to as
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