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The glow emitted by a substance exposed to external radiation is called A. luminescence. B. fluorescence. C. bioluminescence. D. phosphorescence.
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Asked 11/20/2014 5:29:25 PM
Updated 11/20/2014 11:37:44 PM
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This answer has been confirmed as correct and helpful.
Edited by jeifunk [11/20/2014 11:36:43 PM], Confirmed by jeifunk [11/20/2014 11:36:44 PM]
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User: The glow emitted by a substance exposed to external radiation is called A. luminescence. B. fluorescence. C. bioluminescence. D. phosphorescence.

Weegy: The glow emitted by a substance exposed to external radiation is called: fluorescence.




User: ccording to the information in your study unit, which of the following locations requires the highest illuminance? A. A bank lobby B. A residential stairway C. A study area D. A school locker room

Question
Asked 11/20/2014 5:29:25 PM
Updated 11/20/2014 11:37:44 PM
1 Answer/Comment
This answer has been confirmed as correct and helpful.
Edited by jeifunk [11/20/2014 11:36:43 PM], Confirmed by jeifunk [11/20/2014 11:36:44 PM]
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A study area requires the highest illuminance.
Added 11/20/2014 11:37:44 PM
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Which of the following values represents an index of refraction of an actual material? A. 5 / 4 B. 1 / 4 C. 1 / 2 D. 0
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Updated 12/20/2014 10:51:07 PM
1 Answer/Comment
The value that represents an index of refraction of an actual material is 5 / 4.
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Updated 11/21/2014 9:08:36 AM
1 Answer/Comment
United States has the highest number of Fortune 100 companies.
Added 11/21/2014 9:08:34 AM
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Which of the following factors will have a greater impact on a population as the density of that population increases? A. Natural disaster B. Predation C. Climate D. Weather
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Updated 11/18/2014 9:47:00 PM
1 Answer/Comment
NATURAL DISASTER will have a greater impact on a population as the density of that population increases.
Added 11/18/2014 9:47:00 PM
This answer has been confirmed as correct and helpful.
The _______ of a sound wave is defined as the amount of energy passing through a unit area of the wave front in a unit of time. A. amplitude B. intensity C. frequency D. compression
Question
Not Answered
Updated 11/19/2014 1:45:47 AM
1 Answer/Comment
The intensity of a sound wave is defined as the amount of energy passing through a unit area of the wave front in a unit of time.
Added 11/19/2014 1:45:47 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [11/19/2014 1:54:25 AM]
A wave front has the form of a A. sine wave. B. surface of a sphere. C. straight line. D. circle.
Weegy: D. straight line. User: In which one of the following locations can a person hear the echo of a sound? A. Less than 33.2 meters behind the reflecting surface B. At least 16.6 meters in front of the reflecting surface C. Less than 16.6 meters in front of the reflecting surface D. At least 33.2 meters behind the reflecting surface Weegy: A person can hear the echo of a sound: D. At least 16.6 meters in front of the reflecting surface User: Which one of the following frequencies of a wave in the air can be heard as an audible sound by the human ear? A. 1,000 Hz B. 100,000 Hz C. 0.10 Hz D. 10 Hz Weegy: Which one of the following frequencies of a wave in the air can be heard as an audible sound by the human ear : C. 1,000 Hz. User: Which one of the following environments will sound not travel through? A. Vacuum B. Solid C. Gas D. Liquid (More)
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Updated 11/19/2014 1:50:51 AM
1 Answer/Comment
Sound will not travel through a vacuum.
Added 11/19/2014 1:50:51 AM
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Confirmed by selymi [11/19/2014 5:26:18 AM]
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