A massive star can fuse more and more massive nuclei, but this process is limited by the fact that, at some point, an element that is produced ____
a. becomes completely degenerate in the core, changing the pressure-temperature relationship
b. cannot produce energy through fusion
c. will only fuse in the presence of even more massive nuclei
d. is not found in nature
e. decays radioactively before it can undergo fusion
b
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The specific heat of a polyatomic gas is greater than the specific heat of a monatomic gas because:
A. the polyatomic gas does more positive work when energy is absorbed as heat B. the monatomic gas does more positive work when energy is absorbed as heat C. the energy absorbed by the polyatomic gas is split among more degrees of freedom D. the pressure is greater in the polyatomic gas E. a monatomic gas cannot hold as much heat
What happened to the quarks that existed freely during the particle era?
A) They combined to make protons, neutrons, and their antiparticles. B) They froze out of the soup of particles at the end of the era. C) They evaporated. D) They combined to make electrons and neutrinos. E) They combined to make W and Z bosons.
A cubical box, 5.00 cm on each side, is immersed in a fluid. The gauge pressure at the top surface of the box is 594 Pa and the gauge pressure on the bottom surface is 1133 Pa. What is the density of the fluid?
A) 1100 kg/m3 B) 12,000 kg/m3 C) 2340 kg/m3 D) 1220 kg/m3 E) 1000 kg/m3
Explain why it is so difficult to see planets around other stars
What will be an ideal response?