Video: Dab tsi yog qhov kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim ntawm lub voos xwmfab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Rau kub me dua qhov no, thaj chaw saum npoo yog txheeb ze dua ntim tshaj nws yog nyob rau hauv loj kub (qhov twg ntim yog txheeb ze dua thaj chaw saum npoo ). qhia meej meej tias raws li qhov loj ntawm ib yam khoom nce (tsis hloov pauv), qhov piv txwv no txo qis.
Ib yam li ntawd, tib neeg nug, qhov kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim yog dab tsi?
Cov thaj chaw saum npoo rau ntim ratio ntawm ib yam khoom yog qhov kev sib raug zoo ntawm ob qhov ntsuas. Nws yog qhov ratio ntawm Deg cheeb tsam rau ntim . Nws qhia qhov sib piv nruab nrab qhov loj ntawm sab nraud ntawm ib yam khoom thiab tus nqi hauv. Cov khoom me me lossis nyias nyias muaj qhov loj thaj chaw saum npoo piv rau tus ntim.
Tsis tas li ntawd, thaj chaw saum npoo puas zoo ib yam li ntim? Qhov chaw saum npoo yog qhov sum ntawm thaj chaw ntawm tag nrho cov ntsej muag ntawm lub cev muaj zog. Nws yog ntsuas nyob rau hauv square units. Ntim yog tus naj npawb ntawm cubic units uas ua kom muaj ib daim duab.
Yog li ntawd, puas yog qhov chaw thiab qhov ntim ntawm lub voos xwmfab zoo ib yam?
Peb paub tias cov volume kub yog sib npaug s3, qhov twg s yog qhov ntev ntawm ib sab ntawm qhov muab kub . Los ntawm ob sab ntawm a kub yog tag nrho cov ib yam , cov thaj chaw saum npoo ntawm kub yog sib npaug rau 6 lub sij hawm cheeb tsam ntawm ib lub ntsej muag.
Dab tsi yog qhov kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim thiab lub sijhawm diffusion?
Thaum lub cell nce loj, lub ntim nce ceev tshaj qhov thaj chaw saum npoo , vim ntim yog kub qhov twg thaj chaw saum npoo yog squared. Thaum muaj ntau ntim thiab tsawg thaj chaw saum npoo , nthuav tawm siv sij hawm ntev dua thiab tsis zoo.
Pom zoo:
Dab tsi yog qhov hloov pauv kev sib raug zoo ntawm ntim thiab thaj chaw saum npoo raws li qhov khoom loj dua?
Raws li lub voos xwmfab loj zuj zus los yog lub xov tooj ntawm tes tau loj dua, ces thaj tsam ntawm qhov ntim rau qhov sib piv - SA: V piv txo. Thaum ib yam khoom / cell me me, nws muaj thaj tsam loj rau qhov ntim piv, thaum lub khoom loj / cell muaj thaj tsam me me rau qhov ntim piv
Qhov txawv ntawm thaj chaw saum npoo thiab thaj tsam sab nraud yog dab tsi?
Qhov chaw sab nraud yog thaj tsam ntawm txhua sab tsis suav nrog thaj tsam ntawm lub hauv paus. Tag nrho qhov chaw ntawm cov khoom yog qhov sib npaug ntawm thaj chaw ntawm tag nrho cov ntsej muag ntawm cov khoom
Dab tsi yog qhov kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim ntawm ib lub sphere?
Rau ib tug kheej kheej, qhov chaw saum npoo yog S = 4 * Pi * R * R, qhov R yog lub vojvoog ntawm tus kheej thiab Pi yog 3.1415 Qhov ntim ntawm ib puag ncig yog V = 4 * Pi * R * R * R / 3. Yog li rau ib tug kheej kheej, qhov sib piv ntawm thaj chaw rau ntim yog muab los ntawm: S / V = 3 / R
Dab tsi yog qhov tseeb ntawm thaj chaw saum npoo rau qhov sib piv ntawm cov kab mob nyob?
Raws li qhov loj ntawm lub cev nce, nws thaj chaw saum npoo mus rau qhov sib piv qis. Qhov no txhais tau hais tias nws muaj qhov tsawg dua qhov chaw muaj rau cov khoom sib txawv, yog li tus nqi ntawm diffusion yuav tsis nrawm txaus kom tau raws li nws cov kev xav tau ntawm cov hlwb
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua