The 3rd harmonic of a complex tone has a frequency of 1,200 Hz. The frequency of the tone is
a. 200 Hz c. 600 Hz
b. 400 Hz d. none of the above
B
Physics & Space Science
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What happens after a helium flash?
A) The core quickly heats up and expands. B) The star breaks apart in a violent explosion. C) The core suddenly contracts. D) The core stops fusing helium. E) The star starts to fuse helium in a shell outside the core.
Physics & Space Science
For a typical auto, the fraction of the gasoline energy wasted as heat is about
A. 1% B. 10% c. 20% D. 80%
Physics & Space Science
The pulses from a pulsar are most likely coming from localized areas near the magnetic poles
Indicate whether the statement is true or false
Physics & Space Science
If a star with an absolute magnitude of x 5 has an apparent magnitude of +5, then its distance is
a. 1 pc. b. 10 pc. c. 100 pc. d. 1000 pc. e. 10,000 pc.
Physics & Space Science