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When a sound source approaches you, the pitch you hear is A. lower than when the source is stationary. B. higher than when the source is stationary. C. the same as when the source is stationary. D. first higher and then lower than the pitch of the source when stationary
Weegy: Yes. This is called a blue shift, and is caused by shortening of the period of waves. It's inverse is a red shift, which occurs when the observer is moving further away from the source of sound. These are both examples of Doppler Shifts. (More)
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Updated 9/26/2012 8:42:26 AM
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When a sound source approaches you, the pitch you hear is higher than when the source is stationary.
Added 9/26/2012 8:41:39 AM
when copying and pasting from another site, be sure you cite the page...also be sure you answer the question the user is asking
Added 9/26/2012 8:42:26 AM
Infrared rays have a shorter wavelength than A. ultraviolet rays. B. X-rays. C. radar waves. D. gamma rays.
Weegy: Infrared rays have a shorter wavelength than: radar waves. (More)
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Updated 24 days ago|6/28/2014 5:00:07 PM
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Polarized sunglasses work by A. blocking light waves that vibrate in one plane. B. gradually refracting light as it passes through the lenses. C. bending light as it passes from air into the lenses. D. reflecting most of the light that strikes the sunglasses
Weegy: Polarized sunglasses work by blocking light waves that vibrate in one plane. (More)
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Updated 24 days ago|6/28/2014 5:06:42 PM
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An incandescent light bulb produces light when electrons flow through the A. air. B. glass. C. filament. D. vacuum.
Weegy: An incandescent light bulb produces light when electrons flow through the filament. Electricity flows into a thin wire filament inside of the bulb. The filament quickly heats up to such a degree that it glows a bright white. (More)
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Updated 24 days ago|6/28/2014 4:51:25 PM
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Which type of research study compares disease rates among population groups, and attempts to identify related conditions or behaviors? A. placebo B. clinical trial C. case control D. epidemiological
Weegy: Epidemiological research studies compare disease rates among population groups, and attempt to identify related conditions or behaviors. (More)
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Updated 24 days ago|6/28/2014 4:46:13 PM
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