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\title{Brief}
\author{Döner}
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$F = -D \cdot s$

$\omega = \sqrt{\frac{D}{m}}$ (für mechanische Schwingungen)

$s(t) = \hat{s} \cdot \sin{(\omega \cdot t)}$

$W_{spann} = \frac{1}{2} D s^2$

$T = 2\pi \sqrt{\frac{L}{2g}}$ bei Urohr und Kette

$\omega = \frac{2\pi}{T}$

$T = \frac{1}{f} \Rightarrow f = \frac{1}{T}$

$T = 2\pi\sqrt{L\cdot C}$ Thomsonsche Schwingungsformel.

Ergibt sich aus: $W_{El} + W_{magn} = konst_t \longrightarrow \frac{\partial W}{\partial t} = 0$

$\omega \pi f$

$c = \lambda \cdot f$ Ausbreitungsgeschwindigkeit

$s(t, x) = \hat{s} \cdot \sin{(2\pi(\frac{t}{T} - \frac{x}{\lambda}))}$

EinsetzenAusrechnen™

Dörte = Döner + Torte mit James Bond

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