The letters AGN stand for
a. three spectral types of stars.
b. active planet.
c. active star.
d. active galaxy nucleus.
e. None of the other choices are correct.
d
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Where are S-type asteroids typically found in the Solar System?
a. in the Kuiper belt b. the inner asteroid belt c. the outer asteroid belt d. at the Lagrange points of Jupiter e. near Earth
If the Andromeda Galaxy collided with the Milky Way, what would most likely happen to Earth?
A) The Sun and all its planets would be crushed by collisions with stars and planets from the Andromeda Galaxy. B) Nothing. C) The Sun would not be disturbed, but the solar system would be ripped apart. D) The Sun will turn into a red giant and explode.
The diagram represents energy levels in a hydrogen atom. The labeled transitions (A through E) represent an electron moving between energy levels. If an electron at level 1 in a hydrogen atom absorbs 10.2 eV of energy, it moves to level 2. What typically happens next?
A) The electron returns to level 1 by emitting an ultraviolet photon with 10.2 eV of energy. B) The electron jumps to level 3 as soon as it absorbs any additional energy. C) The electron remains in level 2 until it absorbs an additional 10.2 eV of energy. D) A different electron drops into level 1 because it is now unoccupied.
The pressure of a substance is directly proportional to its volume when the temperature is held constant and inversely proportional to its temperature when the volume is held constant. Is this substance an ideal gas? Explain why your answer is correct.
What will be an ideal response?