A Type Ia supernova is believed to occur when
a. the core of a massive star collapses.
b. hydrogen detonation occurs.
c. a white dwarf exceeds the Chandrasekhar limit.
d. the cores of massive stars collapse.
e. neutrinos in a massive star become degenerate and form a shock wave that explodes the star.
c
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A 3.000 kg ball is pitched with a kinetic energy of 20.00 Joules. Then the momentum of the ball is
A. 7.500 kg m/s. B. 8.350 kg m/s. C. 9.450 kg m/s. D. 10.95 kg m/s. E. 12.50 kg m/s.
A water-filled paper cup held in a flame will not catch fire. This is because
A) the inside of the paper is wet. B) water is an excellent conductor of heat. C) paper is a poor conductor of heat. D) the paper cup cannot become appreciably hotter than the water it contains.
Due to the cycle of precession, in 12,000 years, which star will replace Polaris as the guiding North Star?
a. Betelgeuse b. Sirius c. Vega d. Rigel e. Spica
A 2-L bottle of soda gives you more for your money than a 2-qt bottle would, at the same price
Indicate whether the statement is true or false