The illuminance on a surface is 6 lux and the surface is 4 meters from the light source. What is the intensity of the source? A. 144 candelas B. 72 candelas C. 96 candelas D. 24 candelas
The illuminance on a surface is 6 lux and the surface is 4 meters from the light source. The intensity of the source is 96 candela I = E *d^2 , I = 6 *4^2 = 16*6 =96 candela.
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Updated 155 days ago|6/25/2020 5:28:27 PM
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The illuminance on a surface is 6 lux and the surface is 4 meters from the light source. The intensity of the source is 96 candela I = E *d^2 , I = 6 *4^2 = 16*6 =96 candela.
Added 155 days ago|6/25/2020 5:28:27 PM

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Updated 73 days ago|9/15/2020 1:48:40 PM
When discussing discordant and harmonious sound waves, Low ratios of the frequencies of the original and resultant waves indicate discordant waves is false statement.
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If 20 beats are produced within one second, which of the following frequencies could possibly be held by two sound waves traveling through a medium along a common path at the same time? A. 22 Hz and 42 Hz B. 38 Hz and 63 Hz C. 47 Hz and 55 Hz D. 18 Hz and 26 Hz
Question
Updated 3 days ago|11/24/2020 2:39:00 PM
If 20 beats are produced within a single second, the following frequencies could possibly be held by two sound waves traveling through a medium along a common path at the same time: 22 Hz and 42 Hz.

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Updated 153 days ago|6/27/2020 1:35:28 PM
Diverging lenses will produce images behind the lens, and converging lenses will produce images in front of the lens is accurate in describing converging and diverging lenses.

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