According to Alan Guth,magnetic monopoles are not observed in our universe because
A) they are theoretically impossible.
B) space expanded so much that they are exceedingly rare.
C) of the presence of electromagnetic radiation.
D) they easily collapse under the force of gravity.
Correct Answer:
Verified
Q22: The universe as a whole is
A)curved.
B)flat.
C)the shape
Q23: In a 1-g gravitational field,in 1 s,a
Q24: A strong gravitational field
A)slows a clock.
B)speeds up
Q25: According to cosmic inflation theory,the distribution of
Q26: General relativity is most concerned with
A)acceleration.
B)gravitation.
C)space-time geometry.
D)all
Q28: Spacetime is curved by
A)mass.
B)the force of gravity.
C)quantum
Q29: "Local observations made in an accelerated frame
Q30: According to inflation theory,parallel lines appear to
Q31: According to Einstein,gravity is not the force
Q32: Space and time are
A)bound together.
B)independent entities.
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