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Energi

Repetitionsspørgsmål

QuestionAnswer
Hvordan er effekt defineret. = P=ΔE/Δt
Hvad er enheden for effekt? J/s=W
Hvad er 1 kwh? 3.6*10^6J
Hvordan lyder formlen hvor specifik varmekapacitet indgår? ΔE=m*c*Δt
Hvad er enheden for specifik varmekapacitet? J/(kg*celcius)
Hvordan lyder formlen hvor varmekapacitet indgår? ΔE=C*Δt
Hvad er enheden for varmekapacitet? J/celcius
Hvordan er sammenhængen mellem varmekapacitet og specifik varmekapacitet? m*c=C
Hvilke faser kan vand befinde sig i? Fast(is) , flydende (vand), gas (damp) --- plasma?
Hvad er specifik smeltevarme? Tabelværdi som angiver hvor meget energi der kræves for at smelte 1kg af stoffet.
Hvad er specifik fordampningsvarme? Tabelværdi som angiver hvor meget energi der kræves for at der fordamper 1kg af stoffet.
Hvad bruges den tilførte energi til ved en faseovergang? Til at bryde molekylerne fra hinanden.
Hvilken type energi får molekylerne mere af, når temperaturen stiger? kinetisk, HVORFOR? FORKLARING FØLGER
Hvilken type energi får molekylerne mere af ved en faseovergang. Potentiel HVORFOR? FORKLARING FØLGER
Hvad er brændværdi? =Angiver den energimængde et bestemt stof afgiver ved forbrænding af 1kg. B=E/m og angives i joule/Kg
Hvordan er nyttevirkning defineret? =η = Enytte / Etotal Forholdet mellem den nyttiggjorte energimængde og den totale.
Created by: JMarvel
 

 



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