Supernova 1987A was the first supernova observed by astronomers since Galileo first turned a telescope to the heavens
Indicate whether the statement is true or false
TRUE
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Their magnetic fields should originate in the planets' ________, but those of Uranus and Neptune don't even come close
Fill in the blank(s) with correct word
The Rare Earth Hypothesis suggests that
A) the circumstances that have allowed life on the Earth to appear and develop may be so rare that it is unlikely to have occurred anywhere else B) Earth and life on it were created by some omnipotent being C) the orbits of any Earth-like planets around other stars would have been disrupted by inward migration of Jovian planets D) Earth-like planets are unlikely to have formed around any other stars
Molecular Rotation: A diatomic quantum mechanical oscillator has a moment of inertia of 7.73 × 10-45 kg ? m2. What is the rotational energy when it is in the quantum state characterized by L = 2? (1 eV = 1.60 × 10-19 J, h = 6.626 × 10-34 J ? s)
A. 2.27 × 10-5 eV B. 2.70 × 10-5 eV C. 7.22 × 10-5 eV D. 8.71 × 10-5 eV
Conventional automobile efficiencies cannot conceivably be higher than about 25%, even with perfect engineering. This is due to
A) the law of conservation of energy. B) frictional loses inside the car plus unburned hydrocarbons. C) the second law of thermodynamics. D) road friction. E) air resistance plus road friction.