Izinto Zefiziksi Zesikole Samabanga Aphezulu Zebanga Leshumi
I-physics iyisayensi yemvelo efunda izenzakalo zemvelo kanye nezakhiwo zezinto. Ezingeni lesikole samabanga aphezulu, i-physics iyisifundo esiyisisekelo ngoba ilungiselela abafundi ukuqonda imiqondo ehlukahlukene eyisisekelo ezoba wusizo emfundweni ephakeme noma empilweni yansuku zonke. Okulandelayo ukubuyekezwa kwezinto ze-physics ezifundwe esikoleni samabanga aphezulu sebanga leshumi, ngokusekelwe kuhlelo lwezifundo olufanele.
1. Isingeniso kuFiziksi
1.1 Incazelo kanye nobubanzi beFiziksi
I-physics ivela egameni elithi "physikos," elisho imvelo. I-physics ifunda izenzakalo zemvelo, kokubili ezingeni le-macro, esingazibona ngqo, kanye nasezingeni elincane, njengezinhlayiya ezingaphansi kwe-atomic. Ububanzi be-physics buhlanganisa amasimu ahlukahlukene njenge-mechanics, i-thermodynamics, i-electromagnetism, i-optics, kanye ne-physics yesimanje.
1.2 Indlela Yesayensi
Indlela yesayensi iyindlela ehlelekile esetshenziswa ocwaningweni lwefiziksi. Izinyathelo zendlela yesayensi zifaka phakathi ukuqaphela, ukwakheka kwe-hypothesis, ukuhlola, ukuhlaziywa kwedatha, kanye neziphetho. Ukusebenzisa indlela yesayensi kubalulekile ekukhiqizeni ulwazi olusebenzayo noluthembekile.
2. Ubuningi namaYunithi
2.1 Ubuningi Obuyisisekelo kanye Nobuningi Obuvelayo
Ubuningi obuyisisekelo buyinani elakha isisekelo sezinye izinto futhi linamayunithi anqunyiwe, njengobude (imitha), isisindo (ikhilogram), kanye nesikhathi (sesibili). Ubuningi obutholakala buyinani elitholakala kubuningi obuyisisekelo, isibonelo, isivinini (imitha ngomzuzwana) kanye nokusheshisa (imitha ngomzuzwana oyisikwele).
2.2 Uhlelo Lwamazwe Ngamazwe (SI)
Uhlelo Lwamazwe Ngamazwe (i-SI) luhlelo lwamayunithi asetshenziswa emhlabeni jikelele kwezesayensi. Iyunithi ye-SI yobude yimitha (m), isisindo yikhilogramu (kg), isikhathi singesesibili (s), ugesi yi-ampere (A), izinga lokushisa yi-kelvin (K), inani lezinto liyi-mole (mol), kanti amandla akhanyayo yi-candela (cd).
3. Ivektha
3.1 Incazelo yeVektha
Ivektha iyinani elinobukhulu kanye nesiqondiso. Izibonelo zamanani evektha yijubane, ukusheshisa, kanye namandla. Ivektha ivezwa njengomcibisholo obude bawo buhambisana nobukhulu bawo futhi isiqondiso sawo sihambisana nesiqondiso sevektha.
3.2 Ukusebenza kweVektha
Imisebenzi eyisisekelo yevektha ifaka phakathi ukuhlanganisa, ukususa, kanye nokuphindaphinda kwe-scalar. Ukuze singeze amavektha amabili, singasebenzisa indlela ye-parallelogram noma indlela ye-triangle. Ngaphandle kwalokho, amavektha angamelwa yizingxenye zawo ze-x, y, kanye ne-z kuma-coordinates e-Cartesian.
4. Ukunyakaza Okuqondile
4.1 Ukunyakaza Okulinganayo Okuqondile (i-GLB)
I-GLB ukunyakaza kwento endleleni eqondile ngesivinini esingaguquki. Isibalo esiyisisekelo se-GLB yi-\(s = v \times t\), lapho i-\(s\) ibanga, i-\(v\) ijubane, kanye ne-\(t\) isikhathi.
4.2 Ukunyakaza Okusheshayo Okuqondile (GLBB)
I-GLBB ukunyakaza kwento endleleni eqondile enesivinini esingaguquki. Izibalo ezisetshenziswa ku-GLBB zifaka phakathi \(v = u + a \times t\),\(s = u \times t + \frac{1}{2} a \times t^2\), kanye \(v^2 = u^2 + 2a \times s\), lapho \(u\) kuyisivinini sokuqala, \(v\) kuyisivinini sokugcina, \(a\) kuyisivinini, \(t\) yisikhathi, kanye \(s\) yibanga.
5. Umthetho kaNewton
5.1 Umthetho Wokuqala KaNewton
UMthetho Wokuqala KaNewton, owaziwa nangokuthi umthetho we-inertia, uthi into izohlala iphumule noma inyakaze ngendlela efanayo emgqeni oqondile ngaphandle kokuthi iphoqelelwe amandla okushintsha leso simo. I-inertia ukuthambekela kwento ukugcina isimo sayo sokunyakaza.
5.2 Umthetho Wesibili KaNewton
UMthetho Wesibili kaNewton uchaza ubudlelwano phakathi kwamandla, isisindo, kanye nokusheshisa, okwakhiwa ngokuthi \(F = m \times a\), lapho \(F\) kungamandla, \(m\) kungubunzima, kanye \(a\) kungukusheshisa. Lo mthetho ubonisa ukuthi ukusheshisa kwento kuyalingana namandla asebenza kuyo futhi kuyalingana nobunzima bayo ngokuphambene.
5.3 Umthetho Wesithathu KaNewton
Umthetho Wesithathu kaNewton uthi isenzo ngasinye siveza ukusabela okulinganayo nokuphambene. Isibonelo, uma sicindezela udonga ngamandla athile, udonga luzosebenzisa amandla alinganayo kodwa aphambene kithi.
6. Amandla Nomzamo
6.1 Incazelo Yebhizinisi
Umsebenzi (W) ku-physics uchazwa njengobukhulu bamandla abangela into ukuthi ihambe ngendlela yamandla. Ifomula yomsebenzi ithi \(W = F \times s \times \cos \theta\), lapho \(F\) kungamandla, \(s\) kungukufuduka, kanye \(\theta\) kuyi-engeli ephakathi kwendlela yamandla kanye nokufuduka.
6.2 Amandla e-Kinetic kanye Namandla Angase Abe Khona
Amandla e-Kinetic (EK) amandla aphethwe yinto ngenxa yokunyakaza kwayo, abalwa kusetshenziswa ifomula \(EK = \frac{1}{2} m \times v^2\). Amandla angase abe khona (EP) amandla aphethwe yinto ngenxa yesikhundla sayo, ikakhulukazi ngenxa yokuphakama kwayo ngaphezu kobuso boMhlaba, kusetshenziswa ifomula \(EP = m \times g \times h\), lapho \(m\) kuyisisindo, \(g\) kuyisivinini samandla adonsela phansi, kanye \(h\) kuyikuphakama.
6.3 Umthetho Wokulondolozwa Kwamandla
Umthetho wokulondolozwa kwamandla uthi amandla awakwazi ukudalwa noma ukubhujiswa, kodwa angaguqulwa kusuka kwesinye isimo aye kwesinye. Amandla aphelele ohlelweni oluvaliwe ahlala njalo.
7. Umfutho kanye Nomfutho
7.1 Umfutho
I-Momentum yinani elilinganisa ubunzima bokumisa into ehambayo, futhi lakhiwe njengo-\(p = m \times v\), lapho \(p\) kuyi-momentum, \(m\) iyisisindo, kanye \(v\) kuyi-velocity.
7.2 Umfutho
I-Impulse ushintsho ku-momentum oluvela lapho amandla esebenza entweni isikhathi esithile. Ifomula ye-implication ithi \(I = F \times \Delta t\), lapho \(I\) kuyi-implication, \(F\) kungamandla, kanye \(\Delta t\) kuyi-time interval.
7.3 Umthetho Wokulondolozwa Kwejubane
Umthetho wokulondolozwa komfutho uthi umfutho ophelele wesistimu ngaphambi nangemva kokushayisana uyafana, uma nje kungekho mandla angaphandle asebenza ohlelweni.
8. Ukudlidliza Namagagasi
8.1 Ukudlidliza Kwe-Harmonic
Ukudlidliza okulula kwe-harmonic (SHM) ukudlidliza okwenzeka ngenxa yamandla okubuyisela alinganayo futhi aphambene nokushintshashintsha kusuka endaweni yokulingana. I-SHM ingachazwa nge-equation \(x(t) = A \cos(\omega t + \phi)\), lapho \(A\) kuyi-amplitude, \(\omega\) kuyi-angular frequency, kanye \(\phi\) kuyisigaba sokuqala.
8.2 Amagagasi
Amagagasi ayiziphazamiso ezisakazeka ngokusebenzisa indawo noma isikhala. Amagagasi ahlukaniswe ngamagagasi ajikelezayo kanye namagagasi aqondile ngokusekelwe endleleni yokunyakaza kwendawo. Amagagasi aqondile afana namagagasi ebusweni bamanzi, kanti amagagasi aqondile afana namagagasi omsindo emoyeni.
8.3 Izakhiwo Zamagagasi
Amagagasi anezakhiwo ezibalulekile njengokukhanya (re-emission), ukufiphaza (refraction), ukuphambuka (diffraction), kanye nokuphazamiseka (superposition).
Isiphetho
Ukuqonda izinto zefiziksi ebangeni leshumi kuyisinyathelo sokuqala esibalulekile ekufundeni ifiziksi. Ngokuqonda imiqondo eyisisekelo efana nobuningi namayunithi, imithetho kaNewton yokunyakaza, amandla, umfutho, namagagasi, abafundi bangakha isisekelo esiqinile sokufunda izihloko ezithuthuke kakhulu emabangeni eshumi nanye nanye nayishumi nambili. Kuthenjwa ukuthi ngalokhu kuqonda, abafundi ngeke balungiselele izivivinyo zemfundo kuphela kodwa futhi bazokwazi ukusebenzisa ulwazi lwabo lwefiziksi ekuphileni kwansuku zonke.
