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Formelsamling B-niveau projekt [pdf] - sorenr.dk

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November 2003 <strong>Formelsamling</strong> Fysik B-<strong>niveau</strong> Side 3<br />

6 ARBEJDE OG ENERGI........................................................................................................................................................ 22<br />

Konstant kraft arbejde........................................................................................................................................................ 22<br />

Krafts effekt........................................................................................................................................................................ 22<br />

Kinetisk energi ................................................................................................................................................................... 22<br />

Tyngdepotentiel energi....................................................................................................................................................... 22<br />

Fjederpotentiel energi........................................................................................................................................................ 22<br />

Mekanikkens energisætning ............................................................................................................................................... 22<br />

7 ELEKTRISK STRØM OG SPÆNDING ............................................................................................................................. 23<br />

7.1 ELEKTRISK STRØM ............................................................................................................................................................. 23<br />

7.2 RESISTOR OG RESISTIVITET................................................................................................................................................ 23<br />

Ohms lov ............................................................................................................................................................................ 23<br />

Resistivitet:......................................................................................................................................................................... 23<br />

Resistansens temperaturafhængighed:............................................................................................................................... 23<br />

Effekt og energi .................................................................................................................................................................. 24<br />

Energi................................................................................................................................................................................. 24<br />

7.3 SAMMENSÆTNING AF MODSTANDE .................................................................................................................................... 24<br />

Serieforbindelse ................................................................................................................................................................. 24<br />

Parallelforbindelse............................................................................................................................................................. 24<br />

8 ELEKTRISKE KREDSLØB................................................................................................................................................. 25<br />

8.1 KREDSLØB MED EN SPÆNDINGSKILDE................................................................................................................................25<br />

Ohms lov ............................................................................................................................................................................ 25<br />

Polspænding....................................................................................................................................................................... 25<br />

Maksimal strøm.................................................................................................................................................................. 25<br />

Energiomsætning ............................................................................................................................................................... 25<br />

9 FASTE STOFFER OG VÆSKER ........................................................................................................................................ 26<br />

Ændring af temperatur (ikke fase ændring) ....................................................................................................................... 26<br />

Faseændring....................................................................................................................................................................... 26<br />

Densitet .............................................................................................................................................................................. 27<br />

10 IDEALE GASSER................................................................................................................................................................ 28<br />

Stofmængde i mol ............................................................................................................................................................... 28<br />

Tilstandsligningen for ideale gasser .................................................................................................................................. 28<br />

Tilstandsændringer ............................................................................................................................................................ 29<br />

11 GASSERS DENSITET......................................................................................................................................................... 30<br />

Standard densitet................................................................................................................................................................ 30<br />

Densitet i en vilkårlig tilstand ............................................................................................................................................ 30<br />

12 TERMODYNAMIK ............................................................................................................................................................. 31<br />

Termodynamikkens 1. hovedsætning.................................................................................................................................. 31<br />

Arbejde ved konstant tryk................................................................................................................................................... 31<br />

12.1 VARMEKAPACITET........................................................................................................................................................... 32<br />

Konstant volumen............................................................................................................................................................... 32<br />

Konstant tryk...................................................................................................................................................................... 32<br />

Termisk virkningsgrad ....................................................................................................................................................... 32<br />

13 BØLGE FYSIK..................................................................................................................................................................... 33<br />

Udbredelseshastigheden .................................................................................................................................................... 33<br />

Gitteret ............................................................................................................................................................................... 33<br />

Refleksion og brydning....................................................................................................................................................... 33<br />

Brydningsloven................................................................................................................................................................... 33<br />

Brydningsindeks (n), udbredelseshastighed (v) og bølgelængde (λ).................................................................................. 34<br />

Spejlingsloven .................................................................................................................................................................... 34<br />

Totalreflektion.................................................................................................................................................................... 34

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