Galaxies are classified into types solely on the basis of their color
Indicate whether the statement is true or false
FALSE
Physics & Space Science
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Atomic nuclei of almost all elements consist of
a. only neutrons b. protons and electrons c. neutrons and electrons d. only protons e. protons and neutrons
Physics & Space Science
An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the plane were to fly in the same 1 000 m circle at a speed of 300 m/s, by what factor would its centripetal acceleration change?
a. 0.25 b. 0.50 c. 1.00 d. 2.00 e. 4.00
Physics & Space Science
The age of a star cluster can be determined by the luminosity of the main sequence turnoff into the giant stage
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Physics & Space Science
If the source moves away from you, the frequency you hear is lower than f
Indicate whether the statement is true or false
Physics & Space Science