Which of these is NOT true about supernovae?
A) Type I involves carbon detonation.
B) Type II involves formation of iron in the core.
C) The two types are both closely related to evolution of white dwarfs.
D) The one in 1987 in the Large Magellanic Cloud was of type II.
E) Neutronization is vital in understanding type II core collapse.
C
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Sunspots
A) were most numerous during the Maunder Minimum. B) are always found close to the Sun's poles. C) are relatively constant in number every year. D) come in pairs, representing the north and south magnetic fields. E) travel over the surface of the Sun from pole to pole.
A simple pendulum consists of a mass M attached to a weightless string of length L. For this system, when undergoing small oscillations
A) the frequency is independent of the length L. B) the frequency is proportional to the amplitude. C) the frequency is independent of the mass M. D) the frequency is proportional to the period. E) the period is proportional to the amplitude.
All people come very close to being able to float in water. What therefore is the volume (in cubic meters) of a 50-kg woman?
a. 0.007 b. 0.035 c. 0.050 d. 0.070 e. 0.085
A nuclear reactor could explode like an atomic bomb
Indicate whether the statement is true or false