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Kraft einer elektromagnetischen Welle auf Blech

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Exercise

https://texercises.com/exercise/kraft-einer-elektromagnetischen-welle-auf-blech/

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The following quantities appear in the problem: Länge \(\ell\) / Kraft \(F\) / Druck \(p\) / Fläche \(A\) / Breite \(b\) / Strahlungsintensität \(I\) /

The following formulas must be used to solve the exercise: \(p = \dfrac{F}{A} \quad \) \(A = ab \quad \) \(p = \frac{I}{c} \quad \)

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Exercise:
Eine elektromagnetische Welle mit I Intensität treffe ein rechteckiges Blech a times b das die Strahlung komplett absorbiere. Welche Kraft wird dabei von der Strahlung auf des Blech ausgeübt?

Solution:
Auf die Fläche A ab aC bC A wirkt aufgrund der Strahlungsensität eine Strahlungsleistung von P IA Iab I A P. Die auf das Blech wirke Kraft ist somit: F fracPc fracIabc fracPncc F Alternativ hätte man auch zuerst den Strahlungsdruck berechnen können p fracIc fracIncc p und dann daraus die Kraft was auf dasselbe Ergebnis führt. F fracIabc F

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Contained in these collections:

Elektromagnetische Welle auf Blech by TeXercises

2 | 2
Elektromagnetische Wellen 1 by uz

11 | 13

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Tags	elektromagnetische strahlung, elektromagnetische welle, intensität, maxwell, physik, strahlung, strahlungsdruck, welle, wellenlehre
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Difficulty	(3, default)
Points	3 (default)
Language	(Deutsch)
Type	Calculative / Quantity
Creator	uz
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