Dab tsi yog lub zog ntsuas hauv physics?
Dab tsi yog lub zog ntsuas hauv physics?

Video: Dab tsi yog lub zog ntsuas hauv physics?

Video: Dab tsi yog lub zog ntsuas hauv physics?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
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Tus txheej txheem unit siv ntsuas lub zog thiab ua haujlwm hauv physics yog joule, uas muaj lub cim J. Ib qho 60 gram chocolate bar piv txwv muaj txog 280 Calories ntawm zog . Ib Calorie yog tus nqi ntawm zog yuav tsum tau nce 1 kg dej los ntawm 1 ∘ Celsius.

Tib neeg kuj nug, lub zog ntsuas hauv dab tsi?

1 Joule (J) yog MKS unit zog , sib npaug rau lub zog ntawm ib tug Newton ua dhau ib 'meter'. 1 Watt yog lub zog los ntawm qhov tam sim no ntawm 1 Ampere ntws los ntawm 1 Volt.

Tsis tas li ntawd, dab tsi yog qhov zoo tshaj plaws txhais ntawm lub zog? Zog . Feem ntau txhais lub zog yog ib txoj hauj lwm uas muaj zog (gravitational, electromagnetic, thiab lwm yam) ua tau. Vim muaj ntau lub zog, zog muaj ntau yam sib txawv (gravitational, hluav taws xob, tshav kub, thiab lwm yam) uas tuaj yeem muab faib ua ob pawg loj: kinetic zog thiab muaj peev xwm zog.

Tom qab ntawd, ib tug kuj yuav nug, dab tsi yog lub zog thiab nws chav tsev?

Zog yog lub peev xwm ntawm lub cev ua haujlwm. Lub ntsiab cim rau zog yog tsab ntawv loj E. Tus qauv chav tsev yog lub joule, cim los ntawm J. Ib joule (1 J) yog tus zog uas tshwm sim los ntawm qhov sib npaug ntawm ib tug newton (1 N) ntawm quab yuam ua dhau ib 'meter' (1 m) ntawm kev xaav.

Dab tsi yog lub zog system hauv physics?

Ib zog system yog a qhov system feem ntau tsim los muab zog - kev pabcuam rau cov neeg siv kawg. Ua raws li kev pom zoo, IPCC Fifth Assessment Report txhais ib qho zog system raws li "tag nrho cov khoom muaj feem xyuam rau kev tsim khoom, hloov dua siab tshiab, xa khoom, thiab siv zog ".

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