Qhov tseeb SI unit yog dab tsi rau lub peev xwm kub?
Qhov tseeb SI unit yog dab tsi rau lub peev xwm kub?

Video: Qhov tseeb SI unit yog dab tsi rau lub peev xwm kub?

Video: Qhov tseeb SI unit yog dab tsi rau lub peev xwm kub?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
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Cov Ntsiab Cai Tau Txais: Tshwj Xeeb Thaum Muaj Peev Xwm Kub Kub

Nyob rau hauv ?SI units, tshwj xeeb kub muaj peev xwm (cim: c) yog tus nqi ntawm tshav kub nyob rau hauv joules yuav tsum tau nce 1 gram ntawm ib yam khoom 1 Kelvin . Nws kuj tseem yuav qhia tau tias yog J/kg·K. Cov peev txheej kub tshwj xeeb yuav raug tshaj tawm hauv cov calories ib gram degree Celsius, ib yam nkaus.

Tom qab ntawd, ib tus tuaj yeem nug, dab tsi yog chav tsev siv rau cov cua sov tshwj xeeb?

Joules

Tsis tas li ntawd, qhov tshwj xeeb ntsuas kub ntsuas li cas? Tshwj xeeb kub muaj peev xwm yog ntsuas los ntawm kev txiav txim siab npaum li cas kub lub zog yuav tsum tau nce ib gram ntawm cov khoom ib degree Celsius. Cov tshwj xeeb kub muaj peev xwm dej yog 4.2 joules ib gram ib degree Celsius lossis 1 calorie ib gram ib degree Celsius.

Hauv qhov no, SI thiab CGS chav ntsuas cua sov yog dab tsi?

Cov SI unit of heat yog lub joule, tib yam li lwm yam ntawm lub zog. Centimeter-gram-thib ob tau hloov los ntawm MKS meter-kilogram-thib ob tab sis txawm li cas los xij CGS unit ntawm ntsuas rau kub yog 'erg' thiab SI yog 'Kelvin'.

Qhov piv txwv tshwj xeeb kub yog dab tsi?

Txhais: Tshwj xeeb kub yog tus nqi ntawm kub ib chav tsev loj yuav tsum tau nce qhov kub ntawm ib tug degree Celsius. SYMBOL los qhia nws yog c. Tam sim no zoo tshaj piv txwv rau Tshwj xeeb kub yog dej, rau dej tshwj xeeb kub yog 1. lub neej tiag piv txwv ntawm tshwj xeeb kub : dej siv sij hawm ntau dua kub nce thiab txias.

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