A(n) ____________________ is the expulsion of the outer layers of a moderate-mass star that has a degenerate carbon and oxygen core
Fill in the blank(s) with correct word
planetary nebula
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An ideal gas is confined to a container with constant volume. The number of moles is constant. By what factor will the pressure change if the absolute temperature triples?
a. 2/3 c. 3 b. 1/3 d. 9
An electrically neutral metal sphere hangs from an insulating thread. A charged glass wand is brought near to the sphere. Describe what occurs next:
A. The sphere is attracted to the wand B. The sphere is neither attracted nor repelled, since it is electrically neutral C. The sphere is repelled by the wand D. The sphere will become charged
What is the source of luminosity for protostars that have not yet become hot enough for fusion in their cores?
A) light absorbed from nearby stars B) energy released by infalling matter C) fusion in their low-density outer layers D) fission from concentrated radioactive elements
Suppose that Mercury grew to its present size in 1 million years through the accretion of particles averaging 100 g each. On average how many particles did Mercury capture each second? Note: Mercury has a mass of 3.3 × 10^23 kg and a radius of 2439 km
a. about 24 particles per second b. about 3.3 × 10^21 particles per second c. about 67 particles per second d. about 100 million particles per second e. about 100 billion particles per second