Video: Koj yuav daws li cas rau centripetal acceleration?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov centripetal ('centre-nrhiav') kev ceev yog txoj kev txav mus rau hauv qhov chaw ntawm lub voj voog. Cov kev ceev yog sib npaug rau lub square ntawm lub nrawm, muab faib los ntawm lub vojvoog ntawm txoj kev ncig.
Tib neeg kuj nug, dab tsi yog qhov qhia rau centripetal acceleration?
ac = v2r a c = v 2 r, uas yog kev ceev ntawm ib yam khoom nyob rau hauv ib lub voj voog ntawm lub voj voog r ntawm ib tug ceev v. Yog li, centripetal acceleration yog ntau dua nyob rau hauv high speeds thiab nyob rau hauv ntse nkhaus (lub vojvoog me me), raws li koj tau pom thaum tsav tsheb.
Yuav ua li cas yog lub formula rau centripetal acceleration derived? Deriving tus qauv centripetal acceleration
- Peb tuaj yeem suav cov arc ntev s raws li ob qho kev ncua deb (nruab nrab = tus nqi * lub sijhawm = v Δt) thiab siv lub ntsiab lus ntawm radian (arc = radius * kaum hauv radians = r Δθ)
- Lub angular tshaj tawm ntawm cov khoom yog li v / r (hauv radians ib chav tsev ntawm lub sijhawm.)
- Nco ntsoov qhov kev dhau los ntawm kev txhaum mus rau cos yog los ntawm l'Hôpital txoj cai.
Tsis tas li ntawd, dab tsi yog qhov ua rau centripetal acceleration?
A centripetal Lub zog muaj peev xwm muab tau los ntawm lub ntiajteb txawj nqus (orbits), tus nqi hluav taws xob (electron orbits around a nucleus) lossis los ntawm ib txoj hlua (ib yam dab tsi raug nplawm ib ncig ntawm ib txoj hlua). Yog li ntawd, rau lub voj voog yuav tsum muaj lub zog (nrog rau lwm yam ua rau ) uas yog coj mus rau ib qho taw tes, lub cntre.
Koj txhais li cas los ntawm acceleration?
Lub ntsiab txhais ntawm kev ceev yog: Kev nrawm yog vector kom muaj nuj nqis uas txhais tau tias yog tus nqi ntawm qhov khoom hloov nws qhov nrawm. Ib yam khoom yog ceev yog nws hloov nws qhov nrawm. vam tias nws yuav pab tau koj.
Pom zoo:
Yuav ua li cas koj hloov ceev mus rau acceleration graph?
Yog hais tias daim duab yog tshaj tawm vs lub sij hawm, ces nrhiav qhov chaw yuav muab rau koj tsiv, vim hais tias ceev = tawm / sij hawm. Yog tias daim duab acceleration vs lub sij hawm, ces nrhiav qhov chaw muab rau koj hloov nyob rau hauv ceev, vim acceleration = hloov nyob rau hauv tshaj tawm / lub sij hawm
Yuav ua li cas koj nrhiav tau qhov kev daws teeb meem rau ib khub xaj?
Txhawm rau txheeb xyuas yog tias tus khub txiav txim yog qhov kev daws teeb meem rau qhov sib npaug, koj tuaj yeem ua qhov kev sim. Txheeb xyuas qhov x-tus nqi hauv tus khub xaj thiab ntsaws rau hauv qhov sib npaug. Thaum koj ua kom yooj yim, yog tias tus y-tus nqi koj tau txais yog tib yam li y-tus nqi hauv tus khub xaj, ces tus khub txiav txim yog qhov kev daws teeb meem rau qhov sib npaug
Thaum koj pov pob ncaj qha mus rau pem hauv ntej Yuav ua li cas muaj tseeb txog nws acceleration?
Koj pov lub pob ncaj nraim, yog li ntawm nws txoj kev nce, nws cov kev taw qhia tseem nce. Txawm li cas los xij, lub pob qeeb qeeb, yog li nws qhov nrawm qis. Nyob rau sab saum toj ntawm lub pob txav, nws qhov ceev yog xoom. Nyob rau sab saum toj ntawm lub pob lub zog, nws tseem cuam tshuam los ntawm lub ntiajteb txawj nqus, yog li nws tseem muaj qhov nrawm vim lub ntiajteb txawj nqus: 9.8 m / s2
Koj yuav daws li cas rau t hauv PV nRT?
Rewrite the equation as nRt = PV n R t = P V. Faib txhua lo lus los ntawm nR thiab ua kom yooj yim. Faib txhua lub sij hawm hauv nRt = PV n R t = P V los ntawm nR n R
Yuav ua li cas koj daws rau ib tug tsis paub exponent?
Exponential equations uas tsis paub tshwm sim ib zaug Qhov tshwm sim yog tias tus exponential sawv ib leeg ntawm ib sab ntawm kab zauv, uas tam sim no muaj daim ntawv b f = a, qhov twg tus exponent f muaj cov tsis paub x. Yog hais tias lub hauv paus ntawm tus exponential yog e ces coj natural logarithms ntawm ob sab ntawm kab zauv