14.Time dilation – the slowing down of time for objects moving at nearly the spe

Question

14.Time dilation – the slowing down of time for objects moving at nearly the speed of light
Select one:
A. Happens in science fiction, but not in reality
B. Was Einstein's "greatest blunder"
C. Has been observed for subatomic particles that decay after a certain time.
D. Is Einstein’s wildest idea but has not been tested

16.General relativity is based on the equivalence principle that states
Select one:
A. if person B is in a rapidly moving reference frame (moving at constant velocity), then person B will observe exactly the same effects for person A as person A observes for person B.
B. The laws of physics are equivalent for all observers
C. all objects are attracted toward all other objects in the universe by gravitational forces.
D. The effects of gravity are the same as the effects of acceleration
E. Nothing can travel faster than the speed of light

24.As you fall directly into a black hole (feet first), your body is stretched out ("spaghettified") because
Select one:
A. the black hole's gravitational field is stronger on your feet than your head.
B. the laws of physics break down.
C. orbital dynamics are circular, but under length contraction, everything will appear to be a thin long line.
D. the speed of light is constant, making you appear to be a thin long line.
E. time speeds up near the black hole, so the parts of your body nearer the black hole fall faster.

25.An old 1 solar mass black hole enters our Solar System, headed right toward the Earth. What will likely be our first indication?
Select one:
A. Nothing until it begins to feed on a planet.
B. Orbits of the planets and outer solar system bodies will change.
C. Nothing until the Earth’s tides become worse and worse.
D. High energy photons from the accretion disk.
E. Gamma Rays or X-rays from the black hole’s jet.

Explanation / Answer

14.

D. Is Einstein’s wildest idea but has not been tested

24.

A. the black hole's gravitational field is stronger on your feet than your head.

16

D. The effects of gravity are the same as the effects of acceleration

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