1. Pendulum e bonolo e na le khoele e bolelele ba 40 cm mme boima ba digrama tse 100 bo leketlile pheletsong e ka tlase ya khoele. Haeba lebelo le bakwang ke matla a khoheli e le 10 m/s2 Kahoo nako le makhetlo a pendulum e bonolo ke...
Puisano
Hoa tsebahala :
Bolelele ba thapo (l) = 40 cm = 0,4 metres
Ho potlaka ka lebaka la matla a khoheli (g) = 10 m/s2
E botsitsoe : Nako (T) le makhetlo (f)
Mehlala e 5 ea modulus ea Young ea mathata a khatello ea maikutlo le ho tenyetseha
1. Thapo ea naelone ea bophara ba 2 mm e huloa ka matla a li-Newton tse 100. Fumana khatello ea thapo!
Puisano
Hoa tsebahala :
Matla a ho thapolla (F) = 100 Newton
Bophara ba thapo (d) = 2 mm = 0,002 metres
Radius ea thapo (r) = 1 mm = 0,001 meter
E botsitsoe : Khatello ea thapo
Mehlala e 7 ea lipotso tsa bokhoni ba capacitor ea poleiti e tšoanang
1. Capacitor ea poleiti e bapileng e nang le bokhoni ba C e na le tumello ea vacuum ea εo, sebaka se nang le karolo e tsheletseng A le sebaka se pakeng tsa dipoleiti d. Haeba sebaka se nang le karolo e tsheletseng sa capacitor se eketsoa ho fihlela makgetlo a 4, sebaka se pakeng tsa dipoleiti se ba 2d mme tumello ya vacuum e ba 5εo, joalo bokgoni ba capacitor ya poleiti e bapileng e fetoha…
Puisano
Mehlala e 9 ea mathata a enjene ea mocheso (ts'ebeliso ea molao oa bobeli oa thermodynamics)
1. Potolohong e le 'ngoe, enjene e monya li-Joules tse 3000 tsa mocheso ho tsoa polokelong ea mocheso o phahameng 'me e hana li-Joules tse 1000 tsa mocheso ho ea polokelong ea mocheso o tlase. Fumana bokhoni ba enjene ea mocheso!
Puisano
Enjene ea mocheso Lentsoe "carnot" lipotsong tse leqepheng lena ha le tšoane le enjene ea Carnot. Enjene ea Carnot ke enjene e ntle ea mocheso 'me e teng feela ka khopolo-taba. Ka lehlakoreng le leng, enjene ea mocheso eo ho buuoang ka eona potsong ena ke enjene ea mocheso ea 'nete, eseng enjene ea mocheso ea khopolo-taba (enjene ea Carnot).
11 Mehlala ea lipotso mabapi le ts'ebeliso ea molao oa pele oa thermodynamics lits'ebetsong tse fapaneng tsa thermodynamic (isobaric, isothermal, isochoric)
1. Kerafo e ka tlase e bonts'a potoloho ea thermodynamic e bonoang ke khase. Mosebetsi o etsoang ke khase ts'ebetsong ABCD ke…
Puisano
Hoa tsebahala :
Khatello ea 1 (P)1) = 2 x 105 Pa
Khatello ea 2 (P)2) = 4 x 105 Pa
Buka ea 1 (V)1) = 1 m3
Buka ea 2 (V)2) = 3 m3
E botsitsoe : Mosebetsi o entsoeng ke khase ts'ebetsong ea potoloho ea ABCD
Jawab :
Mosebetsi o etsoang ke khase = sebaka sa khutlonnetsepa ABCD.
W = (P2 - P1)(V)2 - V1)
W = (4 x 105 - 2 x 105)(3 – 1)
W = (2 x 105)(2)
W = 4 x 105 Joule
Mosebetsi o etsoang ke khase ts'ebetsong ea potoloho ea ABCD ke 4 x 105 Joule.
3 Mehlala ea lipotso mabapi le ts'ebeliso ea molao oa pele oa thermodynamics lits'ebetsong tsa isochoric (bophahamo bo sa fetoheng)
1. Kerafo ea khatello (P) khahlanong le bophahamo ba modumo (V) ba khase e fetang ts'ebetsong ea isochoric. Mosebetsi o etsoang ke khase ts'ebetsong ea AB ke…
Puisano
Ts'ebetso AB = ts'ebetso ea isochoric (bophahamo bo sa fetoheng). Ka bophahamo ba isochoric, bophahamo ba khase (le bophahamo ba sebaka) ha bo fetohe kahoo ha ho mosebetsi o etsoang ke khase.
2. Li-mole tse tharo tsa khase ea monatomic mochesong oa 47 o C le khatello ea 2 x 10 5 Pascal e feta ts'ebetsong ea isochoric ho fihlela khatello e eketseha ho 3 x 10 5 Pascal. Phetoho ea matla a ka hare a khase ke… Khase e sa fetoheng ea bokahohle (R) = 8,315 J/mol.K
Mehlala e 5 ea ho sebelisa molao oa pele oa thermodynamics lits'ebetsong tsa isothermal (mocheso o sa fetoheng)
1. Kerafo e ka tlase e bonts'a khase e loketseng e ntseng e feta ts'ebetso ea isothermal (mokhoa). Mosebetsi o etsoang ke khase ts'ebetsong ea AB ke…
Puisano
Mosebetsi o entsoeng = sebaka se ka tlas'a mothinya AB = sebaka sa khutlotharo + sebaka sa khutlotharo
W = [½ (8 x 10)5–4 x 105)(3-1)] + [4 x 105 (3-1)]
W = [½ (4 x 10)5)(2)] + [4 x 105 (2)]
W = [4 x 105] + [8 x 105]
W = 12 x 105 Joule
Mehlala e 6 ea lipotso mabapi le ts'ebeliso ea molao oa pele oa thermodynamics lits'ebetsong tsa isobaric (khatello e sa khaotseng)
1. Khatello (P) – kerafo ea bophahamo ba modumo (V) ea khase e fetang ts'ebetsong ea isobaric. Mosebetsi o etsoang ke khase ts'ebetsong ea AB ke…
Puisano
Hoa tsebahala :
Khatello (P) = 5 x 105 N / limithara2
Molumo oa pele (V)1) = 2 m3
Moqolo oa ho qetela (V)2) = 6 m3
E botsitsoe : mosebetsi o entsoeng ts'ebetsong AB
Mehlala e 3 ea lipotso mabapi le molao oa pele oa thermodynamics
1. Li-joule tse 3000 tsa mocheso li eketsoa tsamaisong, 'me sistimi e etsa mosebetsi oa li-joule tse 2500 tikolohong. Phetoho ea matla a ka hare a sistimi ke…
Puisano
Hoa tsebahala :
Mocheso (Q) = +3000 Joules
Mosebetsi (W) = +2500 Joule
E botsitsoe : liphetoho matla a ka hare
Jawab :
Mehlala e 19 ea Lipotso tsa Khopolo-taba ea Kinetic ea Likhase
1. Khase e loketseng ka setshelong se koetsoeng qalong e na le khatello ea P le bophahamo ba V. Haeba khatello ea khase e eketsoa ho makhetlo a 4 ho feta ea pele 'me bophahamo ba khase bo lula bo tsitsitse, karolelano ea matla a pele a kinetic le matla a ho qetela a kinetic a khase ke...
Puisano
Hoa tsebahala :
Khatello ea pele (P)1) = P
Khatello ea ho qetela (P)2) = 4P
Molumo oa pele (V)1) = V
Moqolo oa ho qetela (V)2) = V