Isayensi

Izibonelo ezingu-25 zemibuzo yesikhathi sokungahlali kahle

Isikhathi Sokungabi Naso Isisindo Senhlayiya

1. Ibhola elinobunzima obungamagremu ayi-100 lixhunywe entanjeni enobude obungamasentimitha angu-30 njengoba kuboniswe esithombeni. Isikhathi sokungalali kahle ibhola elizungeze i-axis AB...
Ingxoxo
Kuyaziwa ukuthi:
I-axis yokujikeleza yi-AB
Isisindo sebhola (m) = 100 amagremu = 100/1000 = 0,1 amakhilogremu
Ibanga lebhola ukusuka ku-axis yokujikeleza (r) = 30 cm = 0,3 amamitha
Kubuziwe: Isikhathi sokungakhathali kwebhola (I)

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Izibonelo eziyi-10 zemibuzo yesikhathi samandla

1. Ubude benduku u-AB bungamamitha ama-2 kanti ubukhulu bamandla u-F bungama-Newton ayi-10. Thola umzuzu wesitayela ngasephuzwini A kanye nesiqondiso sokuzungeza kwenduku AB!
Ingxoxo
I-axis yokujikeleza itholakala endaweni A.

Kuyaziwa ukuthi:
Amandla (F) = 10 Newton
Ibanga AB (r)_AB) = 2 amamitha
I-Force F yakha i-engeli engu-90^o ngokumelene nenduku AB.
Ingalo yamandla (l) = r_AB ngaphandle 90^o = (amamitha ama-2)(1) = amamitha ama-2
Kubuziwe: Isikhathi samandla mayelana nephuzu A kanye nesiqondiso sokuzungeza kwenduku AB

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Ukuqonda uMthetho ka-Ohm

Funda futhi ngezinto eziphathelene nemibuzo yesibonelo somthetho ka-Ohm kanye nengxoxo yemibuzo yomthetho ka-Ohm.

Cishe kuzo zonke iziqhubi zensimbi, insimu kagesi ukubopha i-dengan ubuningi bamanje kagesi, lapho isilinganiso sensimu kagesi nobuningi bamandla kagesi singaguquguquki. Kuvezwe ngokwezibalo nge-equation:
ρ = E / J
Incazelo: E = insimu kagesi, ρ = ukumelana, J = ukuminyana kwamanje kagesi.

I-proportionality constant ρ ibizwa ngokuthi ukumelana noma ukuphikisana okuthile , inani lakhona lihlala njalo futhi alixhomekile ensimini kagesi ekhiqiza ugesi.

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Isihloko samandla kagesi sixoxe ngobuningi bamandla kagesi, kanti insimu kagesi nayo ichazwe esihlokweni samandla kagesi. Insimu kagesi kanye namandla kagesi kukhona kumqhubi lapho kunomehluko ongaba khona kumqhubi; ngokuphambene nalokho, uma kungekho mehluko ongaba khona, insimu kagesi noma amandla kagesi akhona.

Kumqhubi wensimbi, insimu kagesi ilingana ngqo nobuningi bamanje, lapho isilinganiso sensimu kagesi nobuningi bamanje singu-constant. Isilinganiso sensimu kagesi nobuningi bamanje sibizwa ngokuthi i-resistivity noma i-specific resistance . Ngokwezibalo, ubudlelwano phakathi kwensimu kagesi, ubukhulu bamanje, kanye nokumelana okuthile kuvezwa kulesi sibalo:

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Izibonelo ezi-4 zemibuzo yokunquma isikhathi sokunyakaza kwe-parabolic

1. Ibhola likhahlelwa phezulu nge-engeli engama-30^o ngokumelene nobuso benkundla ngesivinini sokuqala esingu-10 m/s. Nquma isikhathi sokufinyelela ibhola ekuphakameni kwalo okuphezulu! Ukusheshisa kwamandla adonsela phansi = 10m/s²
Ingxoxo
Kuyaziwa ukuthi:
I-engeli (θ) = 30^o
I-Kecepatan isiqalo (v)_o) = 10 m/s
Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s²
Kubuziwe: Isikhathi sokufinyelela ibhola ukuphakama kwalo okuphezulu

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Izibonelo ezintathu zemibuzo mayelana nokunquma indawo yento ehambayo ku-parabola

1. Ibhola liphonswa phezulu nge-engeli engu-60^o ngokuvundlile ngesivinini sokuqala esingu-12 m/s. Thola indawo yento ngemva kokuhamba umzuzwana owodwa! Ukusheshisa kwamandla adonsela phansi = 10m/s²
Ingxoxo
Kuyaziwa ukuthi:
I-engeli (θ) = 60^o
I-Kecepatan isiqalo (v)_o) = 12 m/s
Isikhawu sesikhathi (t) = 1 imizuzwana
Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s²
Kubuziwe: Indawo yebhola ngemva kokuhamba umzuzwana owodwa

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3 Izibonelo zemibuzo mayelana nokunquma isivinini sokugcina sokunyakaza okufana nokwe-parabolic

1. Ibhola likhahlelwa phezulu nge-engeli engama-30^o ngokumelene nobuso bensimu ngesivinini sokuqala esingu-14 m/s. Kungakanani isivinini ukuphela kwebhola uma lifika ebusweni benkundla? Ukusheshisa kwamandla adonsela phansi = 10m/s²
Ingxoxo
Kuyaziwa ukuthi:
I-engeli (θ) = 30^o
Ijubane lokuqala (v)_o) = 14 m/s
Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s²
Kubuziwe: Isivinini sokugcina sebhola uma lifika ebusweni benkundla

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Izibonelo ezintathu zemibuzo yokunquma ibanga elide kakhulu lokunyakaza okufana nokwe-parabolic

1. Ibhola likhahlelwa phezulu nge-engeli engama-60^o ngokumelene nobuso benkundla ngesivinini sokuqala esingu-16 m/s. Iliphi ibanga eliqondile elihanjwa yibhola? Ukusheshisa kwamandla adonsela phansi = 10m/s²
Ingxoxo
Kuyaziwa ukuthi:
I-engeli (θ) = 60^o
I-Kecepatan isiqalo (v)_o) = 16 m/s
Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s²
Kubuziwe: Ibanga elivundlile (ama)

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Wake wazibuza ukuthi kungani ukuduma kwezulu kudlidliza amafasitela noma izindlu? Ngesikhathi semvula, lapho umbani ushaya, uvame ukuzwa ukuduma kwezulu. Ngezinye izikhathi ukuduma kwezulu kudlidliza amafasitela, izindlu, noma ezinye izinto. Wake wakubona lokhu? Eqinisweni, akusikho ukuduma kwezulu kuphela okudlidliza amafasitela; umculo ovela ezipikheni ze-bass ungadlidliza namafasitela noma izindlu! Kungani umsindo udlidliza amafasitela, izindlu, noma ezinye izinto?

Kungenzeka ukuthi uke wafunda ukuthi yonke into yakhiwe ngama-athomu noma ama-molecule. Ama-athomu noma ama-molecule akha into eqinile ahlala edlidliza. Uma ama-athomu akha into eqinile ehlala edlidliza, kungani izinto eziqinile ezisizungezile, njengamatshe, ingilazi, nensimbi, zingabonakali zidlidliza? Lokhu kungenxa yokuthi ubukhulu bokudlidliza buncane kakhulu kangangokuthi abukwazi ukubonwa ngamehlo enyama. Kunjalo nangezindonga nezinye izinto.

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2 Izibonelo zemibuzo yokunquma ukuphakama okuphezulu kokunyakaza okufana nokwe-parabolic

1. Ibhola likhahlelwa phezulu nge-engeli engama-60^o ngokumelene nobuso bensimu. Uma isivinini isiqalo (v)_o) 10 m/s, kungakanani ukuphakama okuphezulu kwebhola? Ukusheshisa ngenxa yamandla adonsela phansi = 10 m/s²
Ingxoxo
Kuyaziwa ukuthi:
I-engeli (θ) = 60^o
Ijubane lokuqala (v)_o) = 10 m/s
Kubuziwe: Ukuphakama okuphezulu (h)
Impendulo:

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