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1. PPT F2 meet 3 Hukum2 dan Proses2 Termodinamika

thermodynamics in Physics

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1. PPT F2 meet 3 Hukum2 dan Proses2 Termodinamika

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  1. HukumPertama Termodinamika

  2. Materi • KapasitasPanasdanPanasJenis • PerubahanFasadanPanasLaten • TransferEnergiTermis • HukumPertamaTermodinamika • EnergiInternalGasIdeal • UsahadanDiagramPVuntukGas • KapasitasPanasdanTeoremaEkipartisi • EkspansiAdiabatikKuasiStatikGas

  3. Temperatureand Heat

  4. PhaseDiagram

  5. HeatCapacity TheheatcapacityCofanobjectisthe proportionalityconstantbetweentheheatQthatthe objectabsorbsorlosesandtheresultingtemperature changeToftheobject TiandTfaretheinitialandfinal temperaturesoftheobject

  6. SpecificHeat • heatcapacityperunitmassorspecificheat cthatrefersnotto an objectbuttoaunitmassofthematerialofwhichtheobjectismade

  7. HeatsofTransformation • Theamountofenergyperunitmassthatmustbetransferredasheatwhena samplecompletelyundergoesaphasechangeiscalledtheheatof transformation • L.Thus,whenasampleofmassmcompletelyundergoesaphasechange,the • totalenergytransferredis

  8. ACloserLookatHeatandWork

  9. TheFirstLawofThermodynamics

  10. ProsesIsotermal • Selamaprosestemperatursistemtetapkonstan A B

  11. ProsesIsotermal • Misalkansuatugasidealberadapadakontainer denganpistonyangbebasbergerak • Saatawalkeadaansistem(gas)padatitikA • KetikaQdiberikanpadasistemterjadiekspansikeB • Temperatur(T)danmassagas(m)konstanselamaproses U3nRT0 2 Hk.Termodinamikake-1:U=Q–W=0 W=Q

  12. ProsesAdiabatik • Selamaprosestidakterjaditransferpanasyangmasuk ataukeluarsistem Prosesadiabatikterjadipadasistemterisolasiataudapat terjadipadasistemyangmempunyaiprosesyangsangatcepat Q=0 Hk.ke-1:U=Q–W=0 U=-W

  13. ProsesAdiabatik • PerbedaanDiagramPVuntukgasIdealantaraproses adiabtik(1–2)danisotermal ContohProsesadiabatik Pistonmotor

  14. ProsesIsobarik • Selamaprosestidakterjadiperubahantekananpadasistem Padaumumnyaterjadipadasistemyangmempunyaikontaklangsung dengantekananatmosferbumiyangdianggapkonstan(misal:reaksi biokimia)

  15. ProsesIsokhorik • Selamaprosesvolumesistemtidakmengalamiperubahan • Disebutjugaproses:volumekonstan,isometrik,isovolumik Prosesiniterjadipadasistemyangmempunyaivolume(wadah)yang kuat,tertutupdantidakdapatberubah V=0,jadiW=0 Hk.ke-1:U=Q–W=0 U=Q

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