Meteorites are valuable to astronomers because:
A) they may provide evidence about the process in which the solar system was born.
B) they originated in other solar systems.
C) they contain diamonds and gold.
D) they reveal the contents of interstellar space.
E) they prove that life can only exist on the Earth.
A
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The Almagest
a. is the book that first described the heliocentric solar system. b. is a collection of the science and mathematics of the Greeks. c. caused the author to be sentenced to house arrest. d. is a book of astrological myths and predictions produced by the Arabs. e. first described the Copernican theory.
Simple Harmonic Motion: A ball is oscillating on an ideal spring with an amplitude of 8.3 cm and a period of 4.6 s. Write an expression for its position, x, as a function of time t, if x is equal to 8.3 cm at t = 0.0 s. Use the cosine function.
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
One can raise a quantity q to a power a when a has units.
What is thought to prevent the formation of stars with masses larger than about 300 times that of our Sun?
A) Molecular clouds do not have enough material to form such massive stars. B) Such massive stars would fragment into binary stars because of their rapid rotation. C) Such massive stars would generate so much light that radiation pressure would blow them apart. D) The onset of degeneracy pressure would prevent such massive stars from forming.