Nws txhais li cas yog tias ib yam khoom muaj lub peev xwm kub tshwj xeeb?
Nws txhais li cas yog tias ib yam khoom muaj lub peev xwm kub tshwj xeeb?

Video: Nws txhais li cas yog tias ib yam khoom muaj lub peev xwm kub tshwj xeeb?

Video: Nws txhais li cas yog tias ib yam khoom muaj lub peev xwm kub tshwj xeeb?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

Tshwj xeeb kub yog Jg-oK. Yog li ntawd, a siab tus nqi txhais tau tias tias nws yuav siv ntau lub zog los tsa (lossis qis dua) nws qhov kub thiab txias. Ntxiv kub rau ib Tsawg kub tshwj xeeb ” compound yuav ua rau nws qhov kub thiab txias ntau sai dua li ntxiv kub rau a kub tshwj xeeb compound.

Ua raws li qhov no hauv kev txiav txim siab, puas yog cov khoom uas ua kom sov sai sai muaj lub peev xwm siab lossis qis dua?

Tshwj xeeb kub yog tus tus nqi ntawm kub yuav tsum tau tsa tus qhov kub ntawm chav tsev loj ntawm yam khoom mus txog 101^{0} 10. Yog li ntawd, yog tias a tshuaj heats sai sai yuav muaj a Tsawg kub muaj peev xwm.

Ib sab saum toj no, lub peev xwm kub ntawm ib yam khoom lossis cov khoom sawv cev li cas? Tshwj xeeb kub muaj peev xwm yog tus nqi ntawm kub lub zog yuav tsum tau nce qhov kub ntawm a yam khoom nyob rau hauv ib chav tsev loj. Cov tshwj xeeb kub muaj peev xwm ntawm a cov ntaub ntawv yog lub cev khoom. Nws yog kuj yog ib qho piv txwv ntawm cov cuab yeej uas nws kim heev txij li nws tus nqi yog proportional rau qhov loj ntawm qhov system raug tshuaj xyuas.

Kuj paub, dab tsi yog qhov tshwj xeeb kub ntawm cov khoom?

Cov tshwj xeeb kub (tseem hu ua tshwj xeeb kub peev) yog tus nqi ntawm kub yuav tsum tau hloov ib chav tsev loj (los yog chav tsev kom muaj nuj nqis, xws li mole) ntawm a yam khoom los ntawm ib tug degree ntawm kub.

Dab tsi yog qhov sib npaug rau cov peev txheej tshwj xeeb?

Cov units ntawm tshwj xeeb kub muaj peev xwm yog J / (kg ° C) lossis sib npaug J / (kg K). Cov Thaum tshav kub kub muaj peev xwm thiab cov tshwj xeeb kub muaj feem cuam tshuam los ntawm C = cm lossis c = C / m. Mas m, tshwj xeeb kub c, hloov kub ΔT, thiab kub ntxiv (los yog rho tawm) Q muaj feem cuam tshuam los ntawm kev sib npaug : Q=mcΔT.

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