Video: Lub thawv puas yog lub voos xwmfab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib rooj plaub tshwj xeeb rau a lub thawv yog a kub . Qhov no yog thaum txhua sab yog tib qhov ntev. Koj tuaj yeem pom qhov ntim ntawm a kub tsuas yog paub qhov ntsuas ntawm ib sab. Qhov no yog qhov uas peb tau txais lo lus "cubed".
Ib yam li ntawd, koj tuaj yeem nug, lub thawv zoo li cas?
Thaum cov ntaub ntawv lej hais txog txhua yam xws li polyhedron ua lub cuboid, lwm qhov chaw siv "cuboid" xa mus rau ib qho puab ntawm hom no uas txhua lub ntsej muag yog lub duab plaub (thiab yog li txhua khub ntawm lub ntsej muag uas nyob ib sab sib ntsib hauv lub kaum sab xis); Qhov no txwv ntau hom cuboid tseem hu ua rectangularcuboid, txoj cai
Ib yam li ntawd, lub voos xwmfab siv rau dab tsi? Nws kuj yog ib qho peb-dimensional zoo uas txhua ntawm cov rau sab yog ib tug square los yog ib yam dab tsi zoo li ib tug kub , zoo li dej khov kub los yog nqaij txiav rau hauv kub ). Lub npe kub rov qab mus rau Greek lo lus kybos, uas yog asix-sided tuag siv hauv kev ua si. Raws li ib tug verb, kub txhais tau tias tocut rau hauv kub cov duab.
Kuj paub, daim duab plaub puas tuaj yeem ua lub voos xwmfab?
Ib square yog ib duab plaub nrog txhua sab sib npaug. Soall squares yog duab plaub , tab sis tsis yog tag nrho duab plaub yog squares. Ib yam li ntawd, a kub yog ib daim duab plaub nrog txhua sab sib npaug, thiab yog li ntawd txhua lub ntsej muag ntawm thaj tsam sib npaug. Yog li ntawd a kub yog ib lub prism, tab sis tsis yog tag nrho cov duab plaub kub.
Puas yog ib lub voos xwmfab?
Lub 2-dimensional (2D) zoo li lub voj voog, square , triangle, etc.) uas a kub yog ua los ntawm issquares. Ob sab (ntsej muag) ntawm a kub yog squares. Cov npoo yog cov kab ncaj. Cov ces kaum (vertices) yog nyob rau ntawm rightangles.
Pom zoo:
Dab tsi yog qhov kev sib raug zoo ntawm thaj chaw saum npoo thiab ntim ntawm lub voos xwmfab?
Rau qhov cubes me dua qhov no, thaj chaw saum npoo yog ntau dua piv rau qhov ntim ntau dua li nws nyob hauv qhov loj dua (qhov ntim ntau dua piv rau 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
Koj puas tuaj yeem muab lub voos xwmfab hauv paus los ntawm lub hauv paus square?
Cov Khoom Muag tau nce mus rau Txoj Cai Fais Fab yog qhov tseem ceeb vim tias koj tuaj yeem siv nws los faib cov lus qhia radical. Nco ntsoov tias cov hauv paus hniav zoo ib yam - koj tuaj yeem muab cov hauv paus plaub hau nrog cov hauv paus plaub hau, lossis cov hauv paus hniav nrog lub voos xwmfab, piv txwv li. Tab sis koj tsis tuaj yeem muab lub hauv paus square thiab lub voos xwmfab hauv paus siv txoj cai no
Dab tsi yog qhov flux los ntawm ib lub ntsej muag ntawm lub voos xwmfab?
Teb thiab piav qhia: Cov hluav taws xob flux los ntawm ib sab ntawm ib lub voos xwmfab vim yog tus nqi taw tes yog & rho tawm; 32000 V ⋅ m − 32 000 V ⋅ m
Yuav ua li cas koj pom qhov ntim ntawm lub voos xwmfab nrog lub pyramid saum toj?
Txhawm rau nrhiav qhov ntim ntawm lub voos xwmfab no, muab lub hauv paus lub sijhawm ntawm qhov dav lub sijhawm qhov siab. Txhawm rau nrhiav qhov ntim ntawm lub pyramid, siv thaj tsam ntawm lub hauv paus, egin{align*} Khoov{align*} thiab muab nws lub sij hawm qhov siab thiab ces muab nws los ntawm egin{align*}frac{1}{3}end{ align*}
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