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Murrr4er [49]
3 years ago
11

Choose the ending that best completes the following sentence: If an object is traveling with a constant velocity… A. There are n

o forces on the object. B. There is no net force on the object. C. There are no forces parallel to the direction of motion. D. There are only forces parallel to the direction of motion
Physics
1 answer:
Margarita [4]3 years ago
3 0

I think the answer is B...

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The intensity I of light varies inversely as the square of the distance D from the source. If the intensity of illumination on a
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The intensity on a screen 20 ft from the light will be 0.125-foot candles.

<h3>What is the distance?</h3>

Distance is a numerical representation of the length between two objects or locations.

The intensity I of light varies inversely as the square of the distance D from the source;

I∝(1/D²)

The ratio of the intensity of the two cases;

\rm \frac{I_1}{I_2} =(\frac{D_2}{D_1} )^2\\\\ \rm \frac{2}{I_2} =(\frac{20}{5} )^2\\\\ \frac{2}{I_2} =4^2 \\\\ I_2= \frac{2}{16} \\\\  I_2= 0.125 \ foot-candles

Hence, the intensity on a screen 20 ft from the light will be 0.125 foot-candles

To learn more about the distance refer to the link;

brainly.com/question/26711747

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