Video: Yuav ua li cas koj xam siab hauv physics?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Siab thiab quab yuam muaj feem cuam tshuam, thiab yog li koj tuaj yeem ua tau xam ib qho yog tias koj paub lwm tus los ntawm kev siv lub physics sib npaug , P = F/A. Vim siab yog quab yuam muab faib los ntawm cheeb tsam, nws meter-kilogram-thib ob (MKS) units yog newtons ib square meter, los yog N / m2.
Nyob rau hauv kev hwm rau qhov no, dab tsi yog tus qauv ntawm lub siab nyob rau hauv physics?
Siab txhais tau tias yog lub cev quab yuam tawm ntawm ib yam khoom. Lub zog siv yog perpendicular mus rau saum npoo ntawm cov khoom ib chav tsev. Qhov yooj yim qauv rau siab yog F/A (Force per unit area). Chav tsev ntawm siab yog Pascals (Pa).
SI unit ntawm siab yog dab tsi? Siab -Qhov cuam tshuam ntawm lub zog siv rau saum npoo-yog muab los chav tsev , tau los ntawm kev sib txuas hauv paus units . Cov unit ntawm siab hauv SI system yog lub pascal (Pa), txhais tau tias yog ib tug quab yuam ntawm ib tug Newton ib square meter. Kev hloov pauv ntawm atm, Pa, thiab torr yog raws li nram no: 1 atm = 101325 Pa = 760 torr.
Ib yam li ntawd, tib neeg nug, ua li cas koj suav cov dej siab?
Txiav txim siab dej siab nyob rau hauv qab ntawm ib tug tag nrho lub tog raj kheej ntawm nws sab. Thaum lub vojvoog nyob hauv ko taw, muab lub vojvoog los ntawm 2 thiab tom qab ntawd muab cov khoom los ntawm 0.4333 kom tau txais dej siab hauv PSI. Thaum lub vojvoog nyob rau hauv meters, muab lub vojvoog los ntawm 2 thiab ces muab los ntawm 1.422 kom tau PSI.
Ib qho piv txwv ntawm lub siab yog dab tsi?
Ib qho yooj yim piv txwv ntawm siab tuaj yeem pom los ntawm kev tuav rab riam rau ib daig txiv hmab txiv ntoo. Yog tias koj tuav lub tiaj tiaj ntawm riam tiv thaiv cov txiv hmab txiv ntoo, nws yuav tsis txiav qhov chaw. Lub zog yog kis tawm ntawm thaj chaw loj (qis siab ).
Pom zoo:
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Koj tuaj yeem siv cov mis sib npaug d = rt uas txhais tau hais tias kev ncua deb sib npaug ntawm lub sijhawm sijhawm. Txhawm rau daws kom nrawm lossis tus nqi siv cov qauv rau kev ceev, s = d / t uas txhais tau tias ceev sib npaug sib npaug ntawm lub sijhawm. Yuav kom daws tau lub sij hawm siv cov mis rau lub sij hawm, t = d / s uas txhais tau hais tias lub sij hawm sib npaug sib npaug zos faib los ntawm ceev