A supernova is almost always associated with
a. a very massive star.
b. a very young star.
c. a star undergoing helium flash.
d. a white dwarf in a close binary system.
e. a solar-like star that has exhausted its hydrogen and helium.
d
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Newton's Second Law in 1 Dimension: A certain aircraft has a mass of 300,000 kg. At a certain instant during its landing, its speed is 27.0 m/s. If the braking force is a constant 445,000 N, what is the speed of the airplane 10.0 s later?
A. 10.0 m/s B. 12.2 m/s C. 14.0 m/s D. 18.0 m/s E. 20.0 m/s
The molecular weight of carbon dioxide is 44.0 g/mol. What is the internal energy in 3.00 kg of carbon dioxide at 300 K? As an approximation, treat the carbon dioxide gas as if it was monatomic
A) 2.55 × 105 J B) 1.70 × 105 J C) 2.55 × 104 J D) 1.70 × 104 J E) 1.70 × 106 J
Blackbody radiation is emitted from a small hole in a furnace
Indicate whether the statement is true or false
Fossils are found in
A) sedimentary rocks. B) metamorphic rock. C) igneous rocks. D) sedimentary and some metamorphic rocks.