The reason that we observe more distant galaxies to be moving away from us at higher speeds than nearby galaxies is that
A) the more distant galaxies were flung outward faster by the Big Bang.
B) the more distant galaxies are smaller and less massive, so they can move faster.
C) the nearby galaxies are slowed by our own galaxy's gravitational pull.
D) there is more space to expand between us and the distant galaxies.
D) there is more space to expand between us and the distant galaxies.
You might also like to view...
A person riding a merry-go-round passes very close to a person standing on the ground once (event A) and then again (event B). Assume the ground is an inertial frame and that the rider moves at a constant speed. Which person’s watch measures a proper time ?? between events A and B?
A. The rider in the merry-go-round B. The person standing on the ground C. Both D. Neither
The main reason a person weighs less at the equator than at the poles involves the
A) spin of the Earth. B) influence of the Sun, Moon, and all the planets. C) law of action and reaction.
If the Q-value is less than zero for a nuclear reaction, the reaction is
A) exoergic. B) endoergic. C) endothermic. D) exdoergic. E) not possible.
A 8.0-m long wire with a mass of 10 g is under tension. A transverse wave for which the frequency is 570 Hz, the wavelength is 0.10 m, and the amplitude is 3.7 mm is propagating on the wire
The maximum transverse acceleration of a point on a wire is closest to A) 47,000 m/s2. B) 41,000 m/s2. C) 35,000 m/s2. D) 29,000 m/s2. E) 53,000 m/s2.