According to the nebular theory of solar system formation, why were solid planetesimals able to grow larger in the outer solar system than in the inner solar system?
A) because only metal and rock could condense in the inner solar system, whereas ice also condensed in the outer solar system
B) because the Sun's gravity was stronger in the outer solar system, allowing more solid material to collect
C) because gas in the outer solar system contained a larger proportion of rock, metal, and hydrogen compounds than the gas in the inner solar system
D) because only the outer planets captured hydrogen and helium gas from the solar nebula
A) because only metal and rock could condense in the inner solar system, whereas ice also condensed in the outer solar system
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The _______________ of Jupiter's rings indicated that the rings are made mostly of microscopic particles
Fill in the blank(s) with correct word
The coefficient of area expansion is
a. half the coefficient of volume expansion. b. three halves the coefficient of volume expansion. c. double the coefficient of linear expansion. d. triple the coefficient of linear expansion.
A campus bird spots a member of an opposing football team in an amusement park. The football player is on a ride where he goes around at angular velocity ? at distance R from the center. The bird flies in a horizontal circle above him. Will a dropping the bird releases while flying directly above the person's head hit him?
a. Yes, because it falls straight down. b. Yes, because it maintains the acceleration of the bird as it falls. c. No, because it falls straight down and will land behind the person. d. Yes, because it maintains the angular velocity of the bird as it falls. e. No, because it maintains the tangential velocity the bird had at the instant it started falling.
The isotope, tritium, has a half-life of 12.3 years. Assume we have 10 kg of the substance. How much tritium will be left after 30 years?
a. 0.20 kg b. 1.8 kg c. 0.18 kg d. 1.7 kg e. 4.1 kg