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1 Termofysikk Temperatur er indre kinetisk energi til molekylene i et stoff
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Kelvinskalaen - Universitetet i oslo · A piece of iron has Q temperature of (OOC. A second identical piece of iron is twice as hot. What is the temperature of the second piece of

Mar 24, 2020

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Page 1: Kelvinskalaen - Universitetet i oslo · A piece of iron has Q temperature of (OOC. A second identical piece of iron is twice as hot. What is the temperature of the second piece of

1

Termofysikk

Temperatur er indre kinetisk energi til molekylene i et stoff

Page 2: Kelvinskalaen - Universitetet i oslo · A piece of iron has Q temperature of (OOC. A second identical piece of iron is twice as hot. What is the temperature of the second piece of

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Kelvinskalaen

Page 3: Kelvinskalaen - Universitetet i oslo · A piece of iron has Q temperature of (OOC. A second identical piece of iron is twice as hot. What is the temperature of the second piece of

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Sammenhengen mellom temperatur og energi

Hastighetsfordeling til molekylene i en gass

Hvilken fart har molekylene i Sophus Lies auditorium i dag?

Page 4: Kelvinskalaen - Universitetet i oslo · A piece of iron has Q temperature of (OOC. A second identical piece of iron is twice as hot. What is the temperature of the second piece of

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Tilstandslikningen for en idealgass

Årstidene påvirker lufttrykket

Den som fyller luft i et oppvarmet lokale må være spesielt oppmerksom på temperatur­problemstillingen. Hvis bilen har stått lenge i en oppvarmet garasje, vil nemlig luften inni dekkene oppnå omtrent samme temperatur som garasjeluften. Hvis du fyller 250 kPa i et lokale som holder 20 varmegrader ­ og deretter kjører ut i 20 minusgrader, vil lufttrykket snart synke til rundt 210 kPa.

Men dette problemet kan altså løses ved overfylling. I dette tilfellet ville du oppnådd korrekt lufttrykk ved å fylle 290 kPa.

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Page 5: Kelvinskalaen - Universitetet i oslo · A piece of iron has Q temperature of (OOC. A second identical piece of iron is twice as hot. What is the temperature of the second piece of

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Page 6: Kelvinskalaen - Universitetet i oslo · A piece of iron has Q temperature of (OOC. A second identical piece of iron is twice as hot. What is the temperature of the second piece of

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Tilstandslikningen for en idealgass