See distance from each other are two lamps

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Uploaded: 14.07.2014
Content: 50203.tif (83,85 kB)
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Description

At a distance W m apart are two lamps emitting 15 and 50 Kd. Determine where to place the screen between the lamps, so that it had the same illumination on both sides.

Additional information

Task 50203. Detailed solution with a short recording conditions, laws and formulas used in the decision, the withdrawal of the calculation formula and the answer.
If you have any questions about the decision to write. I try to help.

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