What does the frequency of sound measure? What is the unit of measurement of frequency?
What will be an ideal response?
Sound waves create back-and-forth vibrations of air particles. Frequency measures the number of vibrations of air particles in one second. Its unit is cycles/second, also called Hertz (Hz).
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A guy wire on a pole makes an angle o 38°? with the pole. Find the angle the wire makes with the horizontal ground.?
Fill in the blank(s) with the appropriate word(s).
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____ indicates a brazing filler metal.
A. R B. B C. RB D. IN
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Establish the funicular arch for the system of loads in Figure P6.28, if the maximum allowable compressive force in the arch is 85 kips.
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What is photoperiodism?
What will be an ideal response?
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