The densest, coldest clouds are called _____________
a. reflection nebula b. dark nebula
c. Bok globules d. molecular clouds
d
Physics & Space Science
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The H-R diagram is a diagram plotting the stars according to their
A. luminosity and temperature. B. spectral type and temperature. C. mass and diameter. D. brightness and luminosity class. E. apparent brightness and temperature.
Physics & Space Science
As a helium-filled balloon rises in the air, it becomes
A) bigger. B) more dense. C) heavier. D) all of the above E) none of the above
Physics & Space Science
The WAI guidelines recommend you provide a text equivalent or descriptive tet for every nontext element.
Answer the following statement true (T) or false (F)
Physics & Space Science
One end of a rope is pulled with 100 N, while the opposite end also is pulled with 100 N. The tension in the rope is
A) 0 N. B) 50 N. C) 100 N. D) 200 N.
Physics & Space Science