Which physical unit represents acceleration in the British system?
A) -120 mi/s
B) 40 km, SW
C) 9.8 m/s2
D) 186,000 mi
E) 32 ft/s2
E
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The terrestrial planet cores contain mostly metal because
A) the entire planets are made mostly of metal. B) metals condensed first in the solar nebula and the rocks then accreted around them. C) metals sank to the center during a time when the interiors were molten throughout. D) radioactivity created metals in the core from the decay of uranium. E) convection carried the metals to the core.
How does the amount of sand in a soil influence its water holding ability?
What will be an ideal response?
An automobile's acceleration may be changed by using the
a. windshield wipers. b. steering wheel. c. radio. d. horn.
What is the most likely reason that there are no other jovian planets in our solar system beyond Neptune?
A) Any planets forming beyond Neptune would have drifted out of the solar system due to the weakness of the Sun's gravity at this distance. B) There was no material to create planetesimals beyond the orbit of Neptune. C) By the time planetesimals grew to a large enough mass to capture hydrogen and helium gas from the solar nebula, the gas had been cleared by the solar wind. D) Any planet forming beyond Neptune's orbit would have been scattered outside of the solar system by gravitational encounters. E) Formation of another planet was prevented by orbital resonances with Neptune.