Relatively long duration gamma-ray bursts are produced by:
A) novae.
B) supernovae.
C) hypernovae.
D) neutron star mergers.
E) black hole mergers.
C
You might also like to view...
A material is optically active if it:
a. absorbs light passing through it. b. transmits all light passing through it. c. exhibits interference. d. rotates the plane of polarization of the light passing through it.
For the transit of an extrasolar planet to be observed, the
A) orbital plane of the planet has to be aligned along our line of sight B) planet has to be very large C) orbital plane has to be perpendicular to our line of sight D) parent star has to be very small
Which of the following will cause the degeneracy pressure within an object to increase?
A) raising its temperature B) lowering its temperature C) compressing it to higher density D) letting it expand to lower density E) shining a light on it, which adds radiative energy
Diatomic molecules such as 
and
undergo simple harmonic motion with frequencies that obey Hooke’s Law with the effective mass being half the atomic mass. If the mass of an oxygen atom is 2.66 x 
kg, and the observed frequency of oscillation is 
Hz, what is the effective spring constant associated with the bond between the atoms in an oxygen molecule 
A. 1140 N/m B. 182 N/m C. 116 N/m D. 29 N/m E. 2290 N/m