The Milky Way galaxy contains about ________ stars
Fill in the blank(s) with correct word
100 billion
Physics & Space Science
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What kind of thermal radiation does Earth emit?
A) infrared light B) visible and ultraviolet light C) infrared and visible light D) infrared, visible, and ultraviolet light E) visible light
Physics & Space Science
Two violin strings, vibrating at 880. Hz and 876. Hz respectively, will cause a beat frequency of
A) 4. Hz. B) 8. Hz. C) 16. Hz. D) 878. Hz. E) 1.76 kHz.
Physics & Space Science
Contrast the sizes and membership of the Local Group and Virgo Cluster
What will be an ideal response?
Physics & Space Science
In 1960, the scientist named __________ proposed the concept of seafloor spreading
a. Andrija Mohorovicic b. Harry Hess c. Alfred Wegener d. None of the above
Physics & Space Science