Video: Puas yog qhov ceev ntawm cov particle nce lossis txo?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Txij li thaum particle tuaj yeem txav raws ib txoj kab, y '' tsuas yog ib feem ntawm nws txoj kev nrawm, thiab nws nyob hauv txoj kab ntawm kev txav. Yog li, yog tias a = y '' yog qhov zoo thiab v yog qhov zoo, ces ceev yog nce . Yog tias qhov zoo thiab v yog qhov tsis zoo, ceev yog txo . Yog tias qhov tsis zoo thiab v yog qhov zoo, ceev yog txo.
Raws li txoj cai, yog qhov ceev nce lossis txo qis?
Ceev yog nce thaum lub ceev thiab acceleration muaj tib lub cim. Ceev yog txo thaum lub nrawm thiab nrawm muaj cov cim sib txawv.
Tsis tas li ntawd, qhov nce ceev txhais li cas? Kev nrawm yog cov tus nqi hloov ntawm qhov nrawm nrog lub sijhawm. Ib qho kev hloov pauv hauv qhov nrawm ntawm ib qho khoom ua rau muaj kev nrawm: nce ceev (cov neeg feem ntau yog dab tsi txhais tau tias thaum lawv hais acceleration), txo qis ceev (tseem hu ua deceleration lossis retardation), lossis hloov kev taw qhia (hu ua centripetal acceleration).
Raws li, qhov ceev ntawm cov khoom puas tuaj yeem nce ntxiv thaum nws acceleration txo?
Yog, ib yam khoom ua tau yuav nce nyob rau hauv ceev raws li cov acceleration txo . Yuav kom nkag siab tib yam, koj yuav tsum tau txais lub tswv yim ntawm lub ntsiab lus ntawm kev ceev . Theoretically, kev ceev yog tus nqi ntawm kev hloov ceev thaum ceev yog qhov loj ntawm qhov nrawm.
Koj qhia li cas yog qhov nrawm nce lossis txo qis?
Koj tuaj txog ntawm cov lus teb uas koj twb paub lawm. Nco ntsoov tias thaum acceleration yog tsis zoo - nyob rau hauv lub ncua sij hawm [0, 2) - uas txhais tau hais tias lub ceev yog txo . Thaum twg acceleration yog qhov zoo - ntawm lub caij (2, 4] - lub nrawm nce . Kev nrawm nrawm thiab qeeb qeeb.
Pom zoo:
Koj puas siv cov hlua khi kom nce thiab txo qis?
Lub sijhawm sau ntawv yuav zoo li no: (-∞, 2) u (2, ∞). Ib txwm siv lub voj voog, tsis yog ib qho bracket, nrog infinity lossis tsis zoo infinity. Koj kuj siv cov kab lus rau 2 vim tias ntawm 2, daim duab tsis yog nce lossis txo qis - nws yog tiaj tus
Thaum lub ntim ntawm ib qho piv txwv ntawm cov pa roj yog txo lub siab ntawm cov qauv ntawm cov pa roj?
Kev txo qis Cov pa roj sib xyaw txoj cai hais tias lub siab ntawm cov pa roj yog inversely cuam tshuam nrog lub ntim thiab ncaj qha ntsig txog qhov kub thiab txias. Yog tias qhov kub thiab txias yog nyob tas li, qhov sib npaug raug txo rau Boyle txoj cai. Yog li ntawd, yog tias koj txo qhov siab ntawm cov roj av tas li, nws qhov ntim yuav nce ntxiv
Puas yog cov viscosities ntawm magmas nce nrog nce feem pua ntawm silica?
Lub viscosities ntawm magmas nce nrog nce feem pua ntawm silica. Kev tawg ntawm Hawaii volcanoes tej zaum yuav piav raws li tawg nyob rau hauv piv rau 1980 Mount St. Helens eruption. Basaltic lavas feem ntau yog kub dua thiab khov dua li andesite lavas
Dab tsi yog qhov txawv ntawm instantaneous thiab nruab nrab ceev dab tsi yog qhov piv txwv loj tshaj ntawm kev ceev ceev?
Qhov nruab nrab ceev yog qhov ceev nruab nrab ntawm lub sijhawm. Instantaneous ceev yuav yog qhov ceev txhua qhov muab tam sim ntawd hauv lub sijhawm ntawd, ntsuas nrog lub ntsuas ntsuas lub sijhawm
Ntau npaum li cas ntawm cov pej xeem hauv ntiaj teb nyob ntawm cov kab ke roob rau tag nrho lossis qee qhov ntawm lawv cov dej?
Roob yog lub ntiaj teb "dej yees," muab 60-80% ntawm tag nrho cov dej tshiab rau peb ntiaj chaw. Tsawg kawg ib nrab ntawm lub ntiaj teb cov pej xeem nyob ntawm roob ecosystem kev pabcuam kom muaj sia nyob - tsis yog dej xwb, tab sis kuj muaj zaub mov thiab lub zog huv