Which of the following types of protogalactic clouds is most likely to form an elliptical galaxy?

A) a low-density cloud with quite a bit of angular momentum
B) a dense cloud with quite a bit of angular momentum
C) a very low-density cloud with very little angular momentum
D) a very massive cloud with any density and a lot of angular momentum
E) a dense cloud with very little angular momentum


E

Physics & Space Science

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A 4.00-kg block slides down a frictionless inclined plane with an acceleration 3.00 m/s2. What is the angle of the incline above horizontal?

A) 35.3° B) 45.2° C) 17.8° D) 23.6° E) 53.7°

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The kinetic coefficient of friction is usually larger than the static coefficient of friction

Indicate whether the statement is true or false

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A region of ionized gas and dust, with imbedded hot young stars, is a(n)

A) emission nebula. B) dust cloud. C) dark nebula. D) nebular hole. E) absorption nebula.

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The study of planet Earth is known as

a. mineralogy. b. petrology. c. geology. d. paleontology.

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