What is the Kuiper belt?
A) a region of the solar system that extends almost a fourth of the way to the nearest stars and contains a trillion comets with orbits going in all directions around the Sun
B) a technical name for the asteroid belt
C) the most prominent ring of Saturn that is visible in photographs
D) a region of the solar system beginning just beyond the orbit of Neptune that contains many icy bodies, including Pluto
D
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What is the name of the outer rigid layer of a planet?
a. crust b. mantle c. lithosphere
One foolhardy day, a daring major (let's call him Tom) in the space force decides to become the first of his race to cross the event horizon of the black hole
To add to the drama, he decides to go in wearing only a thin space suit, which offers no shielding against radiation, no cushioning against any forces, and so on. Which of the following is most likely to kill him first (or at least cause significant damage)? (Hint: The key word here is first. Be sure to consider the distances from the black hole at which each of the noted effects is likely to become damaging.) A) the crush of gravity at the singularity embedded within the black hole B) the tidal forces due to the black hole C) the strong acceleration as he descends towards the black hole D) the X-rays from the accretion disk E) the sucking force from the black hole, which will cause his head to explode
Which planet has a ring system?
A) Neptune B) Jupiter C) Saturn D) Uranus E) All of the above
In a relay race, runner A is carrying the baton and has a speed of 3.4 m/s. When he is 25 m behind the starting line, runner B starts from rest and accelerates at 0.140 m/s2. How fast is B traveling when A overtakes her?
A) 0.10 m/s B) 0.33 m/s C) 1.3 m/s D) 2.0 m/s E) A never catches up.