During the process of steel production, the flaws in steel casting are detected by A. infrasonic vibrations. B. resonant vibrations. C. ultrasonic vibrations. D. longitudinal vibrations.
During the process of steel production, the flaws in steel casting are detected by ultrasonic vibrations.
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ephraimzRN|Points 2278|
Updated 2/24/2016 1:34:41 AM
Edited by jeifunk [2/24/2016 1:34:40 AM]
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12. Which of the following phenomena is taking place when sound waves are reflected from a surface along parallel lines? A. Refracting B. Focusing C. Diffusion D. Absorption
Weegy: Refracting is taking place when sound waves are reflected from a surface along parallel lines. (More)
Updated 2/24/2016 1:33:35 AM
The distance from one molecule in a body to the nearest molecule in the body occupying a similar position and moving in the same direction is a A. refraction. B. rarefaction. C. compression. D. wavelength.
Weegy: The distance from one molecule in a body to the nearest molecule in the body occupying a similar position and moving in the same direction is a Wavelength. (More)
Updated 2/24/2016 1:30:10 AM
The spreading of sound waves around openings in barriers is called A. diffraction. B. refraction. C. an echo. D. reverberation.
Weegy: The spreading of sound waves around openings in barriers is called DIFFRACTION. (More)
Updated 2/24/2016 1:25:44 AM
If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is A. 80 degrees. B. 40 degrees. C. 0 degrees. D. 90 degrees.
Question
Updated 2/24/2016 12:02:14 AM
If a wave hits a smooth surface at an angle of incidence of 40 degrees, the angle of reflection is 40 degrees.
Confirmed by yumdrea [2/24/2016 12:03:59 AM]
If a string vibrates at the fundamental frequency of 528 Hz and also produces an overtone with a frequency of 1,056 Hz, this overtone is the A. second harmonic. B. fourth harmonic. C. third harmonic. D. first harmonic.
Weegy: If a string vibrates at the fundamental frequency of 528 Hz and also produces an overtone with a frequency of 1,056 Hz, this overtone is the second harmonic. (More)
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Updated 2/24/2016 1:40:09 AM
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