The wavelength at which a blackbody radiates most depends on its:
A) radius.
B) mass.
C) magnetic fields.
D) temperature.
E) direction of motion.
D
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Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space?
A) The cloud is cool and lies between you and a hot star. B) The cloud is extremely hot. C) The cloud is visible primarily because it reflects light from nearby stars. D) The cloud is cool and dense, so that you cannot see any objects that lie behind it.
In the diathesis-stress model, "diathesis" refers to...
What will be an ideal response?
What is the visible surface of the Sun called?
a. Photosphere b. Atmosphere c. Stratosphere d. Glowing sphere
The slope of a velocity vs. time graph is the
a. distance b. velocity c. acceleration d. none of the above