Chiphunzitso chapadera cha ubale - mavuto ndi mayankho
1. Chinthu chomwe kutalika kwake ndi mamita 60 chimayenda pa liwiro la 0.6 c (c = liwiro la kuwala). Malinga ndi wowonera wosasuntha, kutalika kwa chinthucho ndi kotani?
Zodziwika:
Kutalika koyenera (Lo ) = mamita 60
Liwiro la chinthu (v) = 0.6 c
Kufunidwa: Kutalika kwa kufupika (L)
c = liwiro la kuwala
L o = kutalika koyenera
L = kutalika kwa kupindika
Kutalika kwa kufupika (L):
2. Chochitika chomwe chimawonedwa ndi wowonera wosasuntha kwa masekondi 12. Kodi nthawi ya chochitikacho ndi yotani, malinga ndi wowonera amene amayenda pa liwiro la 0.8 c (c = liwiro la kuwala).
Zodziwika:
Nthawi yodutsa ya chochitikacho malinga ndi wowonera wosasuntha (t s ) = masekondi 12
Liwiro la wowonera (v) = 0.8 c
Kufunidwa: Nthawi yochitika malinga ndi wogwiritsa ntchito amene amayenda pa liwiro la 0.8 c (t m )
Yankho:
Kuchuluka kwa nthawi:
t s = nthawi yosiyana malinga ndi wowonera wosakhazikika
t m = nthawi yosiyana malinga ndi wowonera woyenda
Nthawi yowerengera malinga ndi wowonera woyenda (t m ):
Mafunso ndi mayankho 20 okhudzana ndi chiphunzitso chapadera cha ubale:
1. Funso: Ndi mfundo zazikulu ziti zomwe zimayambira chiphunzitso chapadera cha ubale?
Yankho: Ma postulates awiriwa ndi awa: (1) Malamulo a fizikisi ndi ofanana m'mafelemu onse osasinthika, ndipo (2) Liwiro la kuwala mu vacuum silisintha ndipo silidalira kayendedwe ka gwero kapena wowonera.
2. Funso: Kodi kukulitsa nthawi kumachitika bwanji malinga ndi chiphunzitso chapadera cha ubale?
Yankho: Kutambasula nthawi kumatanthauza chochitika chomwe nthawi imawoneka kuti ikuyenda pang'onopang'ono kwa wowonera yemwe akuyenda poyerekeza ndi amene akupuma, zomwe zimaperekedwa ndi ubale wa Δt' = Δt/√(1 – v²/c²), pomwe v ndi liwiro loyerekeza ndipo c ndi liwiro la kuwala.
3. Funso: Kodi kutalika kwa kupindika kwa mbolo n’chiyani?
Yankho: Kufupika kwa kutalika kumasonyeza kuti chinthu chimawoneka chachifupi poyang'ana kayendetsedwe kake kuchokera kwa wowonera wosasuntha, poyerekeza ndi kutalika kwake koyenera chikakhala chopumula.
4. Funso: Kodi chiphunzitso chapadera cha ubale chimakhudza bwanji lingaliro la nthawi imodzi?
Yankho: Zochitika zomwe zimaoneka nthawi imodzi kwa wowonera m'modzi sizingakhale nthawi imodzi kwa wowonera wina zomwe zikuyenda pa liwiro losiyana. Motero, nthawi imodzi ndi yofanana.
5. Funso: Kodi mawu oti “relativistic mass” amatanthauza chiyani?
Yankho: Kulemera kogwirizana kumatanthauza kuwonjezeka kwa kulemera kogwira mtima kwa chinthu pamene liwiro lake likuyandikira liwiro la kuwala. Kumaperekedwa ndi m = m₀/√(1 – v²/c²), pomwe m₀ ndiye kulemera kotsala.
6. Funso: Kodi chiphunzitso chapadera cha ubale chimakhudzana bwanji ndi mphamvu ndi kulemera?
Yankho: Ubalewu waperekedwa ndi E = mc², zomwe zikusonyeza kuti mphamvu (E) ndi kulemera (m) ndizofanana ndipo zitha kusinthidwa kukhala chimodzi ndi china.
7. Funso: Kodi kufunika kwa liwiro la kuwala (c) m'chiphunzitsochi n'chiyani?
Yankho: Mu chiphunzitso chapadera cha relativity, liwiro la kuwala ndi liwiro lalikulu lomwe chidziwitso kapena zinthu zimatha kuyenda, ndipo limakhalabe lokhazikika mu mafelemu onse osagwira ntchito.
8. Funso: N’chifukwa chiyani n’zosatheka kuti zinthu zolemera zifike kapena kupitirira liwiro la kuwala?
Yankho: Pamene liwiro la chinthu likuyandikira liwiro la kuwala, kulemera kwake kogwirizana ndi zinthu kumawonjezeka, zomwe zimafuna mphamvu zopanda malire kuti zifulumizitse liwiro la kuwala komweko.
9. Funso: Kodi kuwonjezera liwiro kumagwira ntchito bwanji mu ubale wapadera?
Yankho: Mosiyana ndi makina akale, liwiro siliwonjezera mwachindunji. Ngati u ndi liwiro la chinthu chimodzi monga momwe chawonedwera mu chimango chomwe chikuyenda ndi liwiro v, ndiye kuti liwiro lake malinga ndi woyang'anira wosasuntha ndi u' = (u + v) / (1 + uv/c²).
10. Funso: Kodi kusintha kwa Lorentz ndi chiyani?
Yankho: Kusintha kwa Lorentz ndi njira zamasamu zomwe zimagwirizanitsa malo ndi nthawi ya chochitika mu chimango chimodzi chosasinthika ndi zomwe zili mu china zomwe zikuyenda pa liwiro losasintha poyerekeza ndi loyamba.
11. Funso: Kodi ubale wapadera umakhudza bwanji kusunga mphamvu?
Yankho: Momentum ikadalipobe, koma tanthauzo la momentum limakhala relativistic, kuphatikizapo chinthu cha kuchuluka kwa relativistic mass: p = mv/√(1 – v²/c²).
12. Funso: Kodi chiphunzitso chapadera cha ubale chikugwirizana ndi makina a Newton?
Yankho: Inde, chifukwa cha liwiro laling'ono kwambiri kuposa liwiro la kuwala, maulosi a ubale wapadera amafanana ndi a makina a Newtonian.
13. Funso: Kodi kuchepekedwa kwa nthawi kumakhudza bwanji ukalamba?
Yankho: Munthu woyenda pa liwiro loti zinthu zimadalira momwe zinthu zilili amakalamba pang'onopang'ono kuposa munthu amene anakhala chete. Iyi ndi "nkhani yotsutsana" pomwe mapasa amodzi amayenda pa liwiro lofanana ndi kuwala ndipo amabwerera ali aang'ono kuposa mapasa omwe anatsala.
14. Funso: Kodi ubale wapadera umatanthauzira bwanji mphamvu?
Yankho: Mphamvu yonse ndi kuchuluka kwa mphamvu yopumula ya chinthu (mc²) ndi mphamvu yake ya kinetic. Ngakhale ikapuma, chinthu chimakhala ndi mphamvu chifukwa cha kulemera kwake.
15. Funso: Kodi pali chilichonse chomwe chingayende mofulumira kuposa kuwala malinga ndi ubale wapadera?
Yankho: Ayi, liwiro la kuwala ndilo malire a liwiro la padziko lonse. Ma tachyon, tinthu tomwe timaganiza kuti timayenda mofulumira kuposa kuwala, sitikugwirizana ndi chiphunzitsochi.
16. Funso: Kodi kulemera kumakhudzidwa bwanji ndi liwiro la relativistic?
Yankho: Pamene liwiro la chinthu likuyandikira liwiro la kuwala, kulemera kwake kogwirizana ndi zinthu kumawonjezeka popanda malire, zomwe zimafuna mphamvu zambiri kuti chiwonjezeke.
17. Funso: Kodi mfundo ya causality imagwira ntchito yotani pa ubale wapadera?
Yankho: Mfundo ya causality, pomwe chifukwa chimayamba kugwira ntchito, imasungidwabe mu relativity yapadera, ndichifukwa chake liwiro la malire a kuwala ndilofunika kwambiri.
18. Funso: Kodi nthawi yopuma ndi chiyani?
Yankho: Nthawi ya malo imaphatikiza miyeso itatu ya malo ndi gawo lachinayi la nthawi kukhala continuum ya miyeso inayi, yofunikira kwambiri pa dongosolo la ubale.
19. Funso: Kodi ubale wapadera umawona bwanji malo ndi nthawi yeniyeni?
Yankho: Special relativity imakana kuti malo ndi nthawi zonse zilipo. Zonsezi ndi zachibale ndipo zimatha kusiyana malinga ndi momwe munthu akuyendetsera zinthu.
20. Funso: Kodi "chiganizo cha inertial" ndi chiyani?
Yankho: Chifaniziro cha inertial ndi chomwe zinthu zimakhalabe pamalo opumulira kapena kuyenda mozungulira popanda kuchitidwa ndi mphamvu yakunja. Ndi chifaniziro chomwe lamulo loyamba la Newton la kuyenda limagwira.
Chiphunzitso chapadera cha ubale wa zinthu, chomwe chinayambitsidwa ndi Albert Einstein, chinasintha kumvetsetsa kwathu malo, nthawi, mphamvu, ndi zinthu zina. Zotsatira zake zimafikira m'magawo ambiri a sayansi yamakono ndipo zatsimikiziridwa mwa kuyesa.
