U txhais li cas hauv physics tshaj tawm?
U txhais li cas hauv physics tshaj tawm?

Video: U txhais li cas hauv physics tshaj tawm?

Video: U txhais li cas hauv physics tshaj tawm?
Video: Muaj Yis hauv Xib tes yuav Qhia tau Txoj Hmoo li cas 2024, Kaum ib hlis
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u yog pib ceev hauv m/s. t yog time ins. Piv txwv li, lub tsheb nrawm hauv 5 s ntawm 25 m / s txog 3 5 m / s. Nws ceev hloov los ntawm 35 - 25 = 10 m / s.

Xav txog qhov no, U txhais li cas hauv kev tshaj tawm?

Ceev ceev yog txhais raws li vector ntsuas ntawm tus nqi thiab kev taw qhia ntawm kev txav. Muab tso yooj yim, velocity yog ceev ntawm ib yam dab tsi txav mus rau hauv ib qho kev taw qhia, xws li kev ceev ntawm lub tsheb mus rau sab qaum teb ntawm txoj kev loj, los yog ceev lub foob pob hluav taws mus rau hauv qhov chaw.

Qhov thib ob, dab tsi yog qhov nrawm hauv physics nrog piv txwv? Rau piv txwv , "5 meters ib ob" yog ib tug scalar, whereas "5 meters ib ob sab hnub tuaj" yog ib tug vector. Yog tias muaj kev hloov pauv hauv ceev , kev taw qhia lossis ob qho tib si, ces cov khoom muaj hloov pauv ceev thiab tau hais tias tab tom ua kom nrawm nrawm.

Yog li ntawd, U txhais li cas hauv physics?

- Hauv classical mechanics, U feem ntau yog siv los ua lub zog muaj peev xwm. Tshwj xeeb, nws tau siv los ua lub cim forgravitational muaj peev xwm zog thiab elastic muaj peev xwm zog. - Electrodynamics, U yog siv los sawv cev hluav taws xob muaj peev xwm. - Hauv thermodynamics, U feem ntau yog siv los ua lub cim rau lub zog sab hauv.

Dab tsi yog qhov nrawm hauv physics rau menyuam yaus?

Ceev yog qhov loj ntawm ceev . Ceev ceev yog cov ceev ntawm ib yam khoom ntxiv rau nws txoj kev taw qhia. Ceev yog hu ua scalar kom muaj nuj nqis thiab ceev yog vector kom muaj nuj nqis.

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