You observe an x-ray burster. Based on current understanding, you can also conclude that you are observing
A) a close binary system in which one member is a white dwarf.
B) a close binary system in which one member is a neutron star.
C) a close binary system in which one member is a black hole.
D) a close binary system in which one member is a neutron star and the other is a black hole.
B) a close binary system in which one member is a neutron star.
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Semiconductors: If a battery is connected to a diode with the positive terminal to the p side and the negative terminal to the n side, then diode is said to be
A. forward biased. B. reversed biased. C. Neither choice is correct.
Gravitational time dilation can be observed in the spectra of atoms on the surface of the Sun
Indicate whether the statement is true or false
The possibility of life in a Europan ocean probably rests on the question of
A) whether there is enough energy in a useful form to support biology B) whether there is enough water present C) whether there is enough raw materials to build biological molecules D) the level of salinity present
If a = 60 cm, b = 80 cm, Q = ?6.0 nC, and q = 3.0 nC in the figure, what is the magnitude of the electric field at point P?
A. 71 N/C B. 56 N/C C. 60 N/C D. 53 N/C E. 67 N/C