Aluminum is an example of
a. a compound.
b. a solution.
c. an element.
d. an alloy.
c
Physics & Space Science
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All elliptical galaxies are more massive than the largest spiral galaxies
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
In an inertia balance, a body supported against gravity executes simple harmonic oscillations in a horizontal plane under the action of a set of springs. If a 1.00 kg body vibrates at 1.00 Hz, a 2.00 kg body will vibrate at
a. 0.500 Hz. b. 0.707 Hz. c. 1.00 Hz. d. 1.41 Hz. e. 2.00 Hz.
Physics & Space Science
Heavy-water molecules have a mass number of
A) 18. B) 3. C) 12. D) 10. E) 20.
Physics & Space Science
The ground rises and sinks regularly because of tidal effects
Indicate whether the statement is true or false
Physics & Space Science