Cov txheej txheem:

Koj paub li cas cov cua sov ntawm ib lub caij?
Koj paub li cas cov cua sov ntawm ib lub caij?

Video: Koj paub li cas cov cua sov ntawm ib lub caij?

Video: Koj paub li cas cov cua sov ntawm ib lub caij?
Video: Caij Nplooj Ntoo Zeeg Tsis Hnov Koj Xov - Ib Sim Hawj Official MV - 2020 2024, Kaum ib hlis
Anonim

Q = mcΔT Q = mc Δ T, qhov twg Q yog lub cim rau kub hloov, m yog qhov loj ntawm cov khoom, thiab ΔT yog qhov hloov pauv ntawm qhov kub thiab txias. Lub cim c sawv rau tshwj xeeb kub thiab nyob ntawm cov khoom siv thiab theem. Cov tshwj xeeb kub yog tus nqi ntawm kub yuav tsum tau hloov qhov kub ntawm 1.00 kg ntawm huab hwm coj los ntawm 1.00ºC.

Kuj paub, koj yuav nrhiav tau qhov cua sov li cas?

Tshwj xeeb kub

  1. Rau qhov hnyav m = gm = kg.
  2. nrog tshwj xeeb kub c = cal / gm ° C = joule / gm ° C,
  3. pib kub Ti =°C = K =°F.
  4. thiab zaum kawg kub Tf =°C = K =°F,
  5. Q = calories = kcal = x 10^cal.
  6. Q = joules = x 10^joules.

Tsis tas li ntawd, qhov piv txwv ntawm cov cua sov tshwj xeeb yog dab tsi? Piv txwv : 1. xam lub zog yuav tsum tau ua kom qhov kub thiab txias ntawm 2 kg ntawm dej los ntawm 20 ° C mus rau 100 ° C. Cov tshwj xeeb kub Lub peev xwm ntawm dej yog 4200 J / kg ° C. 2.

Ib yam li ntawd, tej zaum koj yuav nug, yuav ua li cas ntsuas qhov kub ntawm cov hlau?

Rau xam cov peev xwm kub tshwj xeeb xav tau cov ntaub ntawv los ntawm kev sim uas kub yog pauv ntawm ib qho piv txwv ntawm cov hlau thiab lwm yam khoom thaum kub yog saib xyuas. ΔT yog kub hloov ntawm tus qauv.

Dab tsi yog lub cim rau cov cua sov tshwj xeeb?

C

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