Which of the following best describes what would happen if a 1.5 solar mass neutron star, with a diameter of a few kilometers, were suddenly to appear in your hometown?
A) It would rapidly sink to the center of the Earth.
B) It would crash into the Earth, throwing vast amounts of dust into the atmosphere which in turn would cool the Earth. Such a scenario is probably what caused the extinction of the dinosaurs.
C) The combined mass of the Earth and the neutron star would cause the neutron star to collapse into a black hole.
D) The entire mass of the Earth would end up as a thin layer, about 1 cm thick, over the surface of the neutron star.
E) It would crash through the Earth, creating a large crater, and exit the Earth on the other side.
D
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Photon energies and wavelengths are _________related to each other.
Fill in the blank(s) with the appropriate word(s).
One of the unusual features of the Earth's moon is that it is
A) very large B) very small C) made mostly of rock D) keeps one side facing the Earth
A 150-kg crate is placed on an adjustable inclined plane. As one end of the incline is raised, the crate begins to move downward. If the crate slides down the plane with an acceleration of 0.20 m/s2 when the incline angle is 18°, what is the coefficient of kinetic friction between ramp and crate? (g = 9.8 m/s2)
a. 0.40 b. 0.50 c. 0.30 d. 0.20 e. 2.8
It is harder to map the structure of the Milky Way as a whole in visible light than with any other form of electromagnetic radiation
Indicate whether the statement is true or false