58
74
3 points
A hummingbird beats its wings up and down with a frequency of 100 Hz. Wh...
Physics, 26.05.2021 02:50 20heldmadison
58
74
3 points
A hummingbird beats its wings up and down with a frequency of 100 Hz. What is the period of the hummingbirds flaps? (D
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59
Answers: 2
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Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.
Answers: 2
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Answers: 2
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Answers: 1
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When the magnetic domains in a material can be aligned, but eventually drift out of alignment, the material is
Answers: 2
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