Most stars, probably all stars, formed:
A) in a binary system.
B) in a triple system.
C) in a cluster of stars.
D) all by themselves.
E) There is no theory to predict this.
C
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Two piano strings are simultaneously played – their mass and length are identical, but the tensions differ. If the first string resonates with a fundamental frequency of 330 Hz, and its tension is 1.2% greater than that of the second string, what is the fundamental frequency of the second string?
A. 328 Hz B. 326 Hz C. 336 Hz D. 334 Hz
What can you conclude about a Type I supernova?
A) It was originally a high-mass star. B) Its spectrum will show large amounts of hydrogen. C) It was originally a low-mass star. D) Its core was mostly iron. E) The star never reached the Chandrasekhar limit.
Determine the overall heat transfer coefficient based on the inside diameter of the tube and shell heat exchanger shown in the figure.
If liquid PMMA is rapidly cooled to room temperature, the structure is ______________.
Fill in the blank(s) with the appropriate word(s).