The corona of the Sun can be observed
a. during a lunar eclipse.
b. with a coronagraph.
c. using filtergrams.
d. during a lunar eclipse and with a coronagraph.
e. none of the others.
b
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Reverberation is a phenomenon you would be most likely to hear if you sing in
A) the shower. B) a small drape-covered room. C) a large drape-covered room. D) the desert.
Is the cosmological red shift really a velocity of a given galaxy?
What will be an ideal response?
Like Olympus Mons, volcanoes on Venus
A) have been extinct for billions of years. B) are shield volcanoes. C) form where continental plates collide. D) only form at the equator. E) are much larger than typical volcanoes on Earth.
If the drag force on a car is F at a moderate highway speed v, at what speed would the drag force be doubled?
a. 1.2v c. 1.7v b. 1.4v d. 2.0v