If you compare two stars,
a. the one with the larger radius will always have the greater luminosity.
b. the one with the higher surface temperature will always have the greater luminosity.
c. the one with the smaller absolute magnitude will always have the greater luminosity.
d. the one with the larger surface area has the greater energy flux from its surface.
c
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Conversion of Units: The following conversion equivalents are given: 1.0 kg = 1000 g 1.0 l = 1000 cm3 1.0 l = 0.0353 ft3The density of a certain liquid is 0.83 g/cm3. The density of this liquid, expressed in kg/ft3, is closest to
A. 24 kg/ft3. B. 19 kg/ft3. C. 21 kg/ft3. D. 26 kg/ft3. E. 28 kg/ft3.
Suppose you see a photo showing Jupiter half in sunlight and half in shadow (i.e., a first-quarter Jupiter). This photo might have been taken by
A) the Keck telescope, on Mauna Kea, Hawaii. B) the Arecibo radio telescope in Puerto Rico. C) the Hubble Space Telescope (which orbits Earth). D) the Juno spacecraft that is orbiting Jupiter.
A 0.500-kg ball traveling horizontally on a frictionless surface approaches a very massive stone at 20.0 m/s perpendicular to wall and rebounds with 70.0% of its initial kinetic energy. What is the magnitude of the change in momentum of the stone?
A) 18.4 kg?m/s B) 14.0 kg?m/s C) 3.00 kg?m/s D) 1.63 kg?m/s E) 0.000 kg?m/s
The closest star to the Sun is named ______________
Fill in the blank(s) with correct word