Scientists believe Saturn's moon Phoebe originated from a ____
a. large impact on Titan broke off a piece
b. captured Kuiper belt object
c. captured asteroid from the asteroid belt
d. planetesimal that did not differentiate
e. Galilean moon with an orbit that crossed into Saturn's orbit
b
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You observe a spiral galaxy with a large central bulge and tightly wrapped arms. It would be classified an:
A) Sc. B) Sb. C) Sa. D) SO. E) E7.
A ray of light, which is traveling in air, is incident on a glass plate at a 45° angle. The angle of refraction in the glass
A) is greater than 45°. B) is less than 45°. C) is equal to 45°. D) is unknown because it all depends on the index of refraction of glass.
What is the proper banking angle for an Olympic bobsled to negotiate a 100-m radius turn at 35 m/s without skidding?
A) 31° B) 41° C) 51° D) 61°
A material has an index of refraction that increases continuously from top to bottom. Of the three paths shown in the figure, which path will a light ray follow as it passes through the material?