What happens when a core's mass exceeds 3 solar masses and its density exceeds that which electron degeneracy pressure can support?
a. The core collapses into a black hole. b. The core collapses into a neutron star.
c. The core collapses into a white dwarf. d. The core collapses into a neutron star or a black hole.
a
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The triple-alpha process
a. controls the pulsations in Cepheid variable stars. b. is the nuclear fusion of hydrogen to helium in massive stars. c. is the process that produces the neutrinos we receive from the Sun. d. requires a temperature of about 5,000,000 K to operate. e. occurs during helium flash.
When at least two reactants join to form just one product, the reaction is referred to as
A 6.00 kg mass is located at (2.00 m, 2.00 m, 2.00 m) and a 5.00 kg mass is located at (–1.0 m, 3.00 m,–2.00 m). If this system of masses rotated about the Y-axis perpendicular to the Z-X plane, then the moment of inertia of this system is
A. 73 kg 
B. 66 kg
C. 60 kg
D. 55 kg
E. 48 kg
If the world grows more food than it needs, how can there be famines? Explain
What will be an ideal response?