Problem 50011.
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DESCRIPTION
Problem 50011.
Luminous flux 9W normally falls to the surface area of \u200b\u200b10 cm2, the reflection coefficient is equal to 0.8. What pressure tests at the same this surface?
Additional information:
A detailed solution with a brief note of the condition, formulas and laws used in the solution, the derivation of the calculation formula and the answer.
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REVIEWS
Reviews: (2)
15.02.2018 22:04:27
Автор помог
01.06.2014 15:36:06
Просто и понятно