How do absolute visual magnitude and luminosity differ?
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Absolute visual magnitude of a star is the apparent visual magnitude it would have if it were 10 pc away, and is an expression of the intrinsic brightness of a star. The luminosity of a star is the total energy the star radiates, including at non-visual wavelengths, in one second. Absolute visual magnitude includes only visible radiation.
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A 1000.0 kg car is moving at If a truck has 18 times the kinetic energy of the car, how fast is the truck moving?
A) 45 km/h B) 63 km/h C) 54 km/h D) 36 km/h
William Herschel was the discoverer of Uranus
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All main-sequence G stars have approximately the same mass
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