Energii

Mechaanik

Energii woort miast üs werk ${\displaystyle W}$ betiakent an bereegent ham ütj krääft ${\displaystyle F}$ an wai ${\displaystyle s}$

${\displaystyle W_{\text{mechaanisk}}=F\cdot s}$

Elektrisk energii

Uun a elektrotechnik saat energii (elektrisk werk) ham ütj späänang ${\displaystyle U}$ , struummäächt ${\displaystyle I}$ an tidj ${\displaystyle t}$ tuup:

${\displaystyle E_{\text{elektrisk}}=U\cdot I\cdot t}$

Energii an faard

Am so muar energii ${\displaystyle E}$ ik iinsaat, am so muar mase ${\displaystyle m}$ koon ik reer. ${\displaystyle v}$ as at faard

${\displaystyle E_{\mathrm {kineetisk} }\,=\,{\tfrac {1}{2}}mv^{2}\,}$ .

Energii as relatiif

Uun en mase ${\displaystyle m}$ raut energii efter det formel

${\displaystyle E_{\text{uun rau}}=m\,c^{2}\,}$

Diarbi as ${\displaystyle c}$ at faard faan't laacht.