Ifiziksi Yesikole Samabanga Aphezulu

Izibonelo ezingu-9 zemibuzo yefiziksi yenuzi mayelana nokusabela kwe-fusion kanye namandla okubopha ama-athomu

1. Qaphela ukusabela okulandelayo kwe-nuclear fusion:
₁H² + ₁H³ → ₂He⁴ + ₀n¹ +E
Uma isisindo ₁H² = 2,014 amu, isisindo ₁H³ = 3,016 amu, isisindo sezinhlayiya ze-α = 4,0026 amu kanye nesisindo se-neutron = 1,0084 amu, khona-ke amandla akhiqizwayo…. (i-amu eyi-1 ilingana ne-931 MeV)
A. 18,62 MeV
B. 17,69 MeV
C. 16,76 MeV
D. 15,73 MeV
E. 14,89 MeV
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Izibonelo ezi-4 zemibuzo ethile yokushisa kanye nomthamo wokushisa

1. Yikuphi okushisa ngokushesha uma komiswa ndawonye elangeni elishisayo, i-aluminium noma ithusi? Ukushisa okukhethekile kwe -aluminium = 900 J/kg ^o C kanye nokushisa okukhethekile kwethusi = 390 J/kg ^o C.

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Uma ukushisa okuthile kwento kukhulu, kuthatha isikhathi eside ukuthi into ifudumale, ngokuphambene nalokho, uma ukushisa okuthile kwento kuncane, kushesha ukufudumala.

Ukushisa okuqondile kwethusi kuncane kunokushisa okuqondile kwe-aluminium, ngakho-ke ithusi lishisa ngokushesha.

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Izibonelo ezi-5 zezinkinga zokushisa

1. Ithini elinesisindo esingamakhilogremu ama-2 linokushisa okuthile okungu- 130 J.kg ^-1 C ^-1 . Inani lokushisa okumuncwa yithini ukuze liphakamise izinga lokushisa lalo kusuka ku-50 ^o C kuya ku-100 ^o C….

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Kuyaziwa ukuthi:

IMisa (m) = 2 kg

Ukushisa okuqondile kwethini (c) = 130 J.kg ^-1 C ^-1

Ukushintsha kwezinga lokushisa (Δ T) = 100 ^o C – 50 ^o C = 50 ^o C

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Izibonelo ezi-5 zemibuzo yokwandisa ivolumu

1. Ibhola eliqinile lenziwe nge-aluminium enobubanzi obuqondile obungu-24 x 10 ^{-6 o} C ^-1 . Uma izinga lokushisa elingu-30 ^o C lingama-30 cm ³ , khona-ke ukuze ivolumu yebhola ikhuphuke ibe ngu-30,5 cm ^3, ibhola kumele lishiswe lifike ezingeni lokushisa elingu-….. ^o C

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Kuyaziwa ukuthi:

I-Coefficient yokwanda okuqondile (α ) = 24 x 10 ^{-6 o} C ^-1

I-coefficient yokwandisa ivolumu (γ ) = 3 a = 3 x 24 x 10 ^{-6 o} C ^-1 = 72 x 10 ^{-6 o} C ^-1

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3 Izibonelo zemibuzo mayelana nokwandiswa kwendawo

1. Ishidi lensimbi ekushiseni okungu- 20 ^o C linobude obungu-50 cm kanye nobubanzi obungu-30 cm. Uma i-coefficient yokwanda okuqondile kwensimbi ingu-10 ^{-5 o} C ^-1 khona-ke ukwanda kwendawo kanye nendawo iyonke ekushiseni okungu-60 ^o C….

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Kuyaziwa ukuthi:

Izinga lokushisa lokuqala (T1 ₎ = 20 ^o C

Izinga lokushisa lokugcina (T2 ₎ = 60 ^o C

Ukushintsha kwezinga lokushisa (ΔT ) = 60 ^o C – 20 ^o C = 40 ^o C

Indawo yokuqala (A ₁ ) = Ubude x ububanzi = 50 cm x 30 cm = 1500 cm ²

I-coefficient yokwanda okuqondile kwensimbi (α ) = 10 ^{-5 o} C ^-1

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Izibonelo ezi-6 zemibuzo yemodeli ye-athomu

1. Umehluko phakathi kwamamodeli e-athomu ngokusho kukaRutherford noBohr uthi…..

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Izibonelo ezi-5 zemibuzo mayelana nokwandiswa kobude

1. Ibha yensimbi ekushiseni okungu-20^oU-C unobude obungu-40 cm. I-coefficient yokwanda okuqondile kwensimbi ingu-10^{-5 o}C^-1Ukwanda kobude bensimbi kanye nobude bokugcina bensimbi ku- shu 70^oU-C u…..
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Kuyaziwa ukuthi:
Ukwenyuka kwezinga lokushisa (ΔT) = 70^oC - 20^oC=50^oC
Ubude bokuqala (L)₁= 40cm
I-Coefficient yokwanda okuqondile kwensimbi (a) = 10^{-5 o}C^-1
Kubuziwe: Ukwanda kobude (ΔL) kanye nobude bokugcina (L)₂)
Impendulo:
a) Ukwanda kobude (ΔL)
ΔL = α L₁ ΔT
ΔL = (10^{-5 o}C^-1)(40 cm)(50^oC)
ΔL = (10^-5)(2 x 10³cm)
ΔL = 2 x 10^-2 cm
ΔL = 2/10² cm
ΔL = 2 / 100 cm
ΔL = 0,02 cm

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Izibonelo ezi-6 zemibuzo yokuguqulwa kwesilinganiso sokushisa: Isikali seCelsius, isikali seFahrenheit, isikali seKelvin

1. 50^oC = ….. ^oF ?
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Uma ucindezela umoya ongu-1 emoyeni, izinga lokushisa le-ice point le-thermometer ye-Celsius lingu-0^oC, kanti i-thermometer Isikali se-Fahrenheit singama-32^oF. Uma umoya ucindezelekile womoya ongu-1, izinga lokushisa lephuzu lomhwamuko le-thermometer ye-Celsius lingu-100^oC, kuyilapho i-thermometer yesikali se-Fahrenheit ingu-212^oF.
Ngakho-ke 0^oC=32^oF kanye ne-100^oC=212^oF.

^{Esikalini se-Celsius, kukhona ama-degree} ayi-100 phakathi kuka-0 ^° C no-100 ^° C. Esikalini se-Fahrenheit, kukhona ^{ama-degree ayi-180 phakathi kuka-32 °} F no-212 ^° F. Ukuze uthole izinga lokushisa le-Fahrenheit (T ^° F), qala ngokuphindaphinda izinga lokushisa le-Celsius (T ^° C) ngo-9/5 bese ufaka ^{ama-degree angu-32.}

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Izibonelo ezi-3 zemibuzo yokulinganisa izinga lokushisa

1. Ipayipi lengilazi elingenasikali eliqukethe utshwala kufanele lisetshenziswe i-thermometerUkuphakama kwekholomu yotshwala lapho ingxenye engezansi yepayipi lengilazi ifakwa eqhweni elincibilikisiwe kungu-5 cm kanti ukuphakama kwekholomu yotshwala lapho ingxenye engezansi yepayipi lengilazi ifakwa emanzini abilayo kungu-25 cm. Uma kusetshenziselwa ukukala izinga lokushisa lamanzi, ukuphakama kwekholomu yotshwala kungu-15 cm. Suhu amanzi….. ^oC
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Imibuzo eyisibonelo namafomula amasekethe kagesi kanye nokumelana kagesi

Amasekethe kagesi

1. Bheka umdwebo wesekethe kagesi olandelayo. Ubukhulu bomsinga kagesi ogeleza nge-resistor engu-8 Ohm….
A. 1,8 Ama-Ampere
B. 1,2 Ampere
Ama-Ampere angu-C. 0,8
D. 0,6 Ampere

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