I-physics

4 Umsebenzi we-Net Amandla adonsela phansi Amandla e-Kinetic - Izinkinga Nezixazululo

1. Into enesisindo esingamakhilogremu angu-5 ukuphakama kwamamitha ayi-10 ngaphezu komhlabathi. Ukusheshisa ngenxa yamandla adonsela phansi kungu-10 m/s ^2. Yimuphi umsebenzi owenziwayo entweni ukuze uyinyuse iye phezulu ukuphakama kwamamitha ayi-15 ngaphezu komhlabathi?

Kwaziwa:

Isisindo sento (m) = 5 kg

Ukuphakama (h) = amamitha angu-10

Ukusheshisa ngenxa yamandla adonsela phansi (g) = 10 m/s ²

Okufunwayo: Kwenziwe umsebenzi kule nto ukuze inyuswe iye phezulu ifike endaweni ephakeme ngamamitha ayi-15 ngaphezu komhlabathi.

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Isikhathi samandla - izinkinga nezixazululo

1. Uma u-F _R engamandla aphelele ka-F ₁ , F ₂ , no-F ₃ , ubukhulu bamandla u-F ₂ no-x buyini?

Kwaziwa:

Amandla aphelele (F)_R) = 40 N

Amandla 1 (F ₁ ) = 10 N

Amandla (F ₃ ) = 20 N

Okufunwayo: Ubukhulu bamandla F ₂ kanye nebanga lika-x

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14 Umthetho kaBoyle Umthetho kaCharles Umthetho kaGay-Lussac – Izinkinga Nezixazululo

1. Umfutho womoya wethayi lemoto ungama- 432 kPa kanti izinga lokushisa lingu- 15 ^o C. Ngemva kwamahora amaningana, umfutho womoya ungama- 492 kPa. Uma ukunwetshwa kunganakwa , liyini izinga lokushisa lomoya ethayini?

Kwaziwa:

Ingcindezi yokuqala (P ₁ ) = 432 kPa

Ukucindezela kokugcina (P ₂ ) = 492 kPa

Izinga lokushisa lokuqala (T1 ₎ = 15 ^o C

Okufunwayo: Izinga lokushisa lokugcina ( _T2 )

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Umjikelezo we-Carnot - izinkinga nezixazululo

1. Uma ukushisa kudonswa yinjini (Q ₁ ) = 10,000 Joules, yimuphi umsebenzi owenziwa yinjini yeCarnot?

Kwaziwa:

Izinga lokushisa eliphansi (T2 ₎ = 400 K

Izinga lokushisa eliphakeme (T1 ₎ = 800 K

Okokufaka ukushisa (Q ₁ ) = 10,000 Joules

Okufunwayo: Umsebenzi owenziwe yinjini yeCarnot (W)

Isixazululo:

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Ishubhu le-Manometer - izinkinga nezixazululo

1. Ishubhu le-manometer ligcwele izinhlobo ezimbili zoketshezi. Ubuningi boketshezi 1 bungu-ρ ₁ = 0.8 g.cm ^-3 , kanti ubuningi boketshezi 2 bungu-ρ ₂ = 1 g.cm ^-3 , kanye nokuphakama h ₁ = 10 cm, bese kuba yini ukuphakama kwe-h ₂.

Kwaziwa:

Ubuningi boketshezi 1 = 0.8 g.cm ^-3

Ubuningi boketshezi 2 = 1 g.cm ^-3

Ukuphakama 1 = 10 cm

Kufunwa: Ukuphakama 2

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Amandla omshini - izinkinga nezixazululo

Umgomo wamandla okusebenza nowokusebenza

1. I-coefficient ye- kinetic friction phakathi kwe-block kanye ne-floor (μ _k ) ingu-0.5. Iyini i- displacement yento/izinto? Ukusheshisa ngenxa yamandla adonsela phansi kungu-10 m/s ².

Kwaziwa:

I-coefficient ye-kinetic friction (μ _k ) = 0.5

Isisindo sebhulokhi (m) = 4 kg

Ukusheshisa ngenxa yamandla adonsela phansi (g) kungu-10 m/s ²

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Izinga lokushisa nokushisa - izinkinga nezixazululo

1. Ku-thermometer X, izinga lokuqandisa kwamanzi ku--30 ^o kanye nezinga lokubila kwamanzi ku-90 ^o . 60 ^o X = ….. ^o C.

Kwaziwa:

Iphuzu lokubanda kwamanzi = -30 ^o

Iphuzu lokubila lamanzi = 90 ^oz

Okufunwayo: 60 ^o X = ….. ^o C

Isixazululo:

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Amatheleskopu ezinkanyezi - izinkinga nezixazululo

1.

Ngokusekelwe kugrafu engenhla, nquma ukukhuliswa kwetheleskopu lapho iso elibukayo likhululekile.

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I-Thermodynamics - izinkinga nezixazululo

Umthetho wokuqala we-thermodynamics

1. Ngokusekelwe kugrafu ye-PV engezansi, iyini isilinganiso somsebenzi owenziwe yigesi enqubweni I, nomsebenzi owenziwe yigesi enqubweni II?

Kwaziwa:

Inqubo 1:

Ingcindezi (P) = 20 N/m ²

Umthamo wokuqala (V ₁ ) = 10 amalitha = 10 dm ³ = 10 x 10 ^-3 m ³

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Ukushayisana - izinkinga nezixazululo

1. Into A (3 kg) ihamba ngesivinini esingu-8 m/s kanti into B (5 kg) ihamba ngesivinini esingu-4 m/s. Uma ukushayisana phakathi kwezinto A no-B kunwebeka ngokuphelele, lingakanani ijubane lezinto A no-B ngemva kokushayisana?

Kwaziwa:

Isisindo sento A (m ₁ ) = 3 kg

Isisindo sento B (m2 ₎ = 5 kg

Isivinini sento A (v ₁ ) = 8 ms ^–1

Isivinini sento B (v ₂ ) = 4 ms ^–1

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