Mehlala e 15 ea Lipotso tsa Mocheso le Mocheso
Tekanyo ea Thermometer
1. Thermometer e lekantsweng X e bontsha -30 °C bakeng sa ntlha ya ho hoama ya metsi le 90 °C bakeng sa ntlha ya ho belisa ya metsi. Mocheso wa 60 °C bakeng sa X o lekana le...
A. 20 ho isa ho C
B. 45 o C
C. 50 o C
D. 75 o C
E. 80 o C
Puisano
Hoa tsebahala hore:
Sebaka sa ho hatsela sa metsi ho thermometer X = -30 o
Tekanyo ea metsi a belang ho thermometer X = 90 o
Potso: 60 o X = ….. o C
Karabo:
Sekaleng sa Fahrenheit, ntlha ea ho hoama ea metsi ke 32 o F 'me ntlha ea ho belisa ea metsi ke 212 o F. Pakeng tsa ntlha ea ho hoama le ntlha ea ho belisa ea metsi ho na le phapang ea 212 o – 32 o = 180 o.
Ka tekanyo ea Celsius, ntlha ea ho hoama ea metsi ke 0 o C 'me ntlha ea ho belisa ea metsi ke 100 o C. Pakeng tsa ntlha ea ho hoama le ntlha ea ho belisa ea metsi ho na le phapang ea 100 o - 0 o = 100 o.
Sekaleng sa X, ntlha ea ho hoama ea metsi ke -30 o X 'me ntlha ea ho belisa ea metsi ke 90 o X. Pakeng tsa ntlha ea ho hoama le ntlha ea ho belisa ea metsi ho na le phapang ea 90 o – (-30 o ) = 90 o + 30 o = 120 o.
Fetolela sekala sa X ho ea ho sekala sa Celsius:
Karabo e nepahetseng ke D.
Katoloso
2. Setene sa tšepe se futhumatsoa mochesong oa 80 o C 'me bolelele ba sona bo ba 115 cm. Haeba coefficient ea katoloso e otlolohileng ea tšepe e le 3.10 -3 o C -1 'me mocheso oa pele oa tšepe e le 30 o C, joale bolelele ba pele ba tšepe ke….
A. 100 cm
B. 101,5 cm
Bolelele ba lisenthimithara tse 102
D. 102,5 cm
E. 103 cm
Puisano
Hoa tsebahala hore:
Mocheso oa pele (T 1 ) = 30 o C
Mocheso oa ho qetela (T 2 ) = 80 o C
Phetoho ea mocheso (ΔT) = 80 o C – 30 o C = 50 o C
Palo e lekanang ea katoloso ea tšepe (α) = 3.10 -3 o C -1
Bolelele ba ho qetela ba tšepe (L) = 115 cm
Ho batloa: Bolelele ba qalong ba tšepe ( Loo )
Karabo:
Foromo ea katoloso ea bolelele:
Karabo e nepahetseng ke A.
3. Thupa ea koporo qalong e bolelele ba 40 cm. Ha e futhumatsoa mochesong oa 80 o C bolelele ba eona bo ba 40,04 cm. Haeba coefficient ea katoloso e otlolohileng ea koporo e le 2,0 x 10 -5 o C -1 joale mocheso oa pele oa thupa ea koporo ke….
A. 20 ho isa ho C
B. 22 o C
C. 25 o C
D. 30 o C
E. 50 o C
Puisano
Hoa tsebahala hore:
Mocheso oa ho qetela (T 2 ) = 80 o C
Bolelele ba qalong (Lo ) = 40 cm
Bolelele ba ho qetela (L) = 40,04 cm
Keketseho ea bolelele (ΔL) = 40,04 cm – 40 cm = 0,04 cm
Palo e lekanang ea katoloso ea koporo (α) = 2,0 x 10 -5 o C -1
Potso: Mocheso oa pele (T 1 )
Karabo:
Foromo ea katoloso ea tšepe:
0,04 = (2,0 x 10 -5 )(40)(80 – T 1 )
0,04 = (80 x 10 -5 )(80 – T 1 )
0,04 = 0,0008 (80 – T 1 )
0,04 = 0,064 – 0,0008 T 1
0,0008 T 1 = 0,064 – 0,040
0,0008 T 1 = 0,024
T 1 = 30 o C
Karabo e nepahetseng ke D.
Phetiso ea Mocheso ka ho Tsamaisa Mocheso
4. Lithupa tsa tšepe tsa boholo bo lekanang, empa li entsoe ka litšepe tse fapaneng, lia kopanngoa joalo ka ha ho bontšitsoe setšoantšong se ka tlase. Haeba ho khanna ha mocheso oa tšepe I ho feta ho khanna ha tšepe II ka makhetlo a mane, joale mocheso o kopanang le litšepe tse peli ke…
A. 450 C
B. 40 0 C
C. 35 0 C
D. 30 0 C
E. 25 0 C
Puisano
Hoa tsebahala hore:
Boholo bo lekanang ba kutu
Ho khanna ha tšepe ka mocheso I = 4k
Ho khanna ha tšepe ka mocheso II = k
Mocheso oa ntlha ea tšepe I = 50 0 C
Mocheso oa ntlha ea tšepe II = 0 0 C
E botsitsoe: Mocheso moo litšepe tse peli li kopanang teng
Karabo:
Foromo ea sekhahla sa phetiso ea mocheso ka ho khanna:
Tlhaloso: Q/t = sekhahla sa phetisetso ya mocheso, k = conductivity ya mocheso, A = sebaka sa bokaholimo, T 1 -T 2 = phetoho ya mocheso, l = bolelele ba thupa
Mocheso moeling oa moeli P le Q:
Lithupa tse peli tsa tšepe A le B li lekana ka boholo kahoo sebaka sa bokaholimo (A) le bolelele (l) ba lithupa li tlosoa ho equation.
Karabo e nepahetseng ke B.
5. Ela hloko polelo e latelang!
(1) Ho tsamaisa motlakase ka tšepe
(2) Phapang ea mocheso lipakeng tsa lipheletso tsa tšepe
(3) Bolelele ba tšepe
(4) Boima ba tšepe
Mabaka a etsang qeto ea sekhahla sa ho ata ha mocheso tšepeng ke...
A. (1), (2) le (3)
B. (1) le (4)
C. (2) le (4)
D. (3) le (4)
E. (4) feela
Puisano
Ho latela foromo ea sekhahla sa phetiso ea mocheso ka phetiso ea motlakase, lintlha tse khethollang sekhahla sa phetiso ea mocheso ke phetiso ea motlakase ea tšepe (k), phapang ea mocheso lipakeng tsa lipheletso tsa tšepe (T) le bolelele ba tšepe (l). Boima ba tšepe ha bo na phello.
Karabo e nepahetseng ke A.
6. Lithupa tse peli tsa PQ tsa boholo bo lekanang, empa mefuta e fapaneng ea tšepe e hoketsoe joalo ka ha ho bontšitsoe setšoantšong se ka tlase. Haeba coefficient ea conduction ea mocheso P e le coefficient ea conduction ea mocheso habeli Q, joale mocheso moeling o pakeng tsa P le Q ke...
A. 84°C
B. 78°C
C. 72°C
D. 70°C
E. 90°C
Puisano
Hoa tsebahala hore:
Lithupa tsa PQ li na le boholo bo lekanang.
Koefficient ea ho tsamaisa mocheso oa tšepe P (k P ) = 2k
Coefficient ea ho khanna mocheso oa tšepe Q (k Q ) = k
Potso: Mocheso moeling oa moeli P le Q
Karabo:
Foromo ea sekhahla sa phetiso ea mocheso ka ho khanna:
Tlhaloso: Q/t = sekhahla sa phetisetso ya mocheso, k = conductivity ya mocheso, A = sebaka sa bokaholimo, T 1 -T 2 = phetoho ya mocheso, l = bolelele ba thupa
Mocheso moeling oa moeli P le Q:
Liropo tsa PQ li lekana ka boholo kahoo A le l lia tlosoa ho equation.
Ha ho karabo e nepahetseng.
Phetoho ea Sebopeho
7. 1 kg ea leqhoa mochesong oa 0 o C e kopanngoa le 0,5 kg ea metsi mochesong oa 0 o C, ebe...
A. Metsi a mang aa hoama
B. leqhoa le leng lea qhibiliha
C. leqhoa lohle lea qhibiliha
D. metsi 'ohle aa hoama
E. boima ba leqhoa ka metsing bo lula bo tsitsitse
Puisano
Lentsoe leqhoa le bolela metsi a tiileng, ha lentsoe metsi le bolela metsi a metsi.
Ha leqhoa le le 0 ° C, le fetoha ho tloha ho le tiileng ho ea ho le metsi. Bakeng sa phetoho ena boemong, leqhoa le tlameha ho monya mocheso. Leqhoa le kopanngoa le metsi, kahoo leqhoa le lokela ho monya mocheso o tsoang metsing. Leha ho le joalo, metsi le 'ona a le 0 ° C, kahoo ha ho mocheso o ka monngoang ke leqhoa. Ka hona, boima ba leqhoa ka metsing bo lula bo tsitsitse.
Karabo e nepahetseng ke E.
Molao-motheo o Motšo
8. Sejaneng sa tšepe se boima ba digrama tse 200, ho na le digrama tse 100 tsa oli mochesong wa 20 o C. Sejaneng, ho kenngwa digrama tse 50 tsa tshepe mochesong wa 75 o C. Haeba mocheso wa sejana o nyoloha ka 5 o C mme mocheso o itseng wa oli = 0,43 cal/g o C, jwale mocheso o itseng wa tshepe ke...
A. 0,143 cal/g o C
B. 0,098 cal/g o C
C. 0,084 cal/g o C
D. 0,075 cal/g o C
E. 0,064 cal/g o C
Puisano
Hoa tsebahala hore:
Boima ba sejana sa tšepe (m) = 200 gr
Mocheso oa pele oa sejana sa tšepe (T 1 ) = 20 o C
Oli e ka sejaneng sa tšepe kahoo mocheso oa oli = mocheso oa sejana sa tšepe.
Mocheso oa ho qetela oa sejana sa tšepe (T 2 ) = 20 o C + 5 o C = 25 o C
Boima ba oli (m) = 100 grams
Mocheso o itseng oa oli (c oli) = 0,43 cal/g o C
Mocheso oa pele oa oli (T 1 ) = 20 o C
Oli e ka sejaneng e le hore oli e be maemong a mocheso le sejana sa tšepe. Kahoo haeba mocheso oa ho qetela oa sejana sa tšepe e le 25 o C, joale mocheso oa ho qetela oa oli ke 25 o C.
Mocheso oa ho qetela oa oli (T 2 ) = 20 o C + 5 o C = 25 o C
Boima ba tšepe (m) = 50 dikgerama
Mocheso oa pele oa tšepe (T 1 ) = 75 o C
Tšepe e qoelisoa ka har'a oli ka har'a sejana, kahoo tšepe e leka-lekaneng le mocheso le oli le sejana. Kahoo haeba mocheso oa ho qetela oa sejana e le 25 o C, joale mocheso oa ho qetela oa tšepe ke 25 o C.
Potso: Mocheso o itseng oa tšepe (c tšepe)
Karabo:
Mocheso o lokolloang ke tšepe:
Q = mc ΔT = (50)(c)(75-25) = (50)(c)(50) = 2500c lik'hilojule
Mocheso o monngoang ke sejana sa tšepe:
Q = mc ΔT = (200)(c)(25-20) = (200)(c)(5) = 1000c lik'hilojule
Mocheso o monngoang ke oli:
Q = mc ΔT = (100)(0,43)(25-20) = (43)(5) = dikhalori tse 215
Molao-motheo oa Black o bolela hore tsamaisong e koetsoeng, e arohaneng, mocheso o lokolloang ke ntho e nang le mocheso o phahameng o monngoa ke ntho e nang le mocheso o tlase.
Q e lokollotsoe = Q e monyehile
2500c = 1000c + 215
2500c – 1000c = 215
1500c = 215
c = 215/1500
c = 0,143 cal/g o C
Karabo e nepahetseng ke A.
9. Khalase e nang le digrama tse 200 tsa metsi mochesong wa 20°C e tlatswa ka digrama tse 50 tsa leqhoa mochesong wa -2°C. Haeba ho etsahala phapanyetsano ya mocheso feela pakeng tsa metsi le leqhoa, kamora ho ba le tekano, ho tla fumanwa tse latelang: (c metsi = 1 cal/gr°C; c leqhoa = 0,5 cal/gr°C; L = 80 cal/gr)
A. leqhoa lohle lea qhibiliha 'me mocheso o kaholimo ho 0°C
B. leqhoa lohle lea qhibiliha 'me mocheso ke 0°C
C. Hase leqhoa lohle le qhibilihang 'me mocheso ke 0°C
D. mocheso oa sistimi eohle o ka tlase ho 0°C
E. metsi a mang aa hoama 'me mocheso oa sistimi ke 0°C
Puisano
Hoa tsebahala hore:
Boima ba metsi (m metsi ) = 200 dikgerama
Mocheso oa metsi ( metsi a T ) = 20 o C
Mocheso o itseng oa metsi (c metsi ) = 1 cal/gr°C
Boima ba leqhoa (m es ) = 50 dikgerama
Mocheso oa leqhoa (T es ) = -2 o C
Mocheso o itseng oa leqhoa (c es ) = 0,5 cal/gr°C
Mocheso oa metsi a qhibilihang (L) = 80 cal/gr
Karabo:
Mocheso ho phahamisa mocheso oa leqhoa ho tloha ho -2 o C ho isa ho 0 o C:
Q = mc ΔT
Q = (50 gram)(0,5 cal/gr°C)(0 o C – (-2 o C))
Q = (50)(0,5 cal)(2)
Q = lik'hilojule tse 50
Futhumatsa ho qhibilihisa leqhoa lohle ka metsing:
Q = m L = (ligrama tse 50)(80 cal/gram) = lik'hilojule tse 4000
Futhumatsa ho fokotsa mocheso oa metsi ohle ho tloha ho 20 o C ho isa ho 0 o C:
Q = mc ΔT
Q = (200 gram)(1 cal/gr°C)(0 o C – (20 o C))
Q = (200)(1 cal)(-20)
Q = -4000 lik'hilojule
Letšoao le letle le bolela hore mocheso o ekelitsoe, letšoao le letle le bolela hore mocheso o lokollotsoe.
Mocheso o hlokahalang ho phahamisa mocheso oa leqhoa ho fihlela ho 0 ° C ke lik'hilojule tse 50, 'me mocheso o hlokahalang ho qhibilihisa leqhoa lohle ke lik'hilojule tse 4000. Ka hona, mocheso oohle o hlokahalang ho qhibilihisa leqhoa lohle ke lik'hilojule tse 4050. Mocheso o fumanehang ke mocheso o lokolloang ke metsi, e leng lik'hilojule tse 4000.
Ho ka fihlelwa qeto ea hore mocheso o fumanehang ha oa lekana ho qhibilihisa leqhoa lohle hore e be metsi. Bongata ba leqhoa bo qhibilihile hore e be metsi, empa karolo e nyane ha ea qhibiliha. Metsi ana le leqhoa le setseng li mochesong oa 0 ° C.
Karabo e nepahetseng ke C.
10. Karolo ea aluminium e boima ba ligrama tse 200 ka mocheso oa 20 o C e kenngoa ka sejaneng sa metsi se boima ba ligrama tse 100 le mocheso oa 80 o C. Haeba mocheso o itseng oa aluminium e le 0,22 cal/g o C 'me mocheso o itseng oa metsi e le 1 cal/g o C, joale mocheso oa ho qetela oa aluminium o haufi le...
A. 20 o C
B. 42 o C
C. 62 o C
D. 80 o C
E. 100 o C
Puisano
Hoa tsebahala hore :
Boima ba aluminium = 200 grams
Mocheso oa aluminium = 20 o C
Boima ba metsi = digrama tse 100
Mocheso oa metsi = 80 o C
Mocheso o itseng oa aluminium = 0,22 cal/g o C
Mocheso o itseng oa metsi = 1 cal/g o C
E botsitsoe : mocheso oa ho qetela oa aluminium
Karabo :
Aluminium e ka metsing kahoo mocheso oa ho qetela oa aluminium = mocheso oa ho qetela oa metsi.
Mocheso o ntshwang ke metsi a mocheso o phahameng (Q e ntshwang) = mocheso o ntshwang ke aluminium ya mocheso o tlase (Q e ntshwang)
m metsi c (ΔT) = m aluminium c (ΔT)
(100)(1)(80 – T) = (200)(0,22)(T – 20)
(100)(80 – T) = (44)(T – 20)
8000 – 100T = 44T – 880
8000 + 880 = 44T + 100T
8880 = 144T
T = 62 o C
Karabo e nepahetseng ke C.
11. Chelete ea tšepe ea 50g mochesong oa 85°C e qoelisoa ka har'a 50g ea metsi mochesong oa 29,8°C (mocheso o itseng oa metsi = 1 cal.g —1 .°C —1 ). Haeba mocheso oa ho qetela e le 37°C 'me setshelo se sa monye mocheso, joale mocheso o itseng oa tšepe ke…
A. 0,15 cal.g -1 .°C -1
B. 0,30 cal.g -1 .°C -1
C. 1,50 cal.g -1 .°C -1
D. 4,8 cal.g -1 .°C -1
E. 7,2 cal.g -1 .°C -1
Puisano
Hoa tsebahala hore :
Boima ba tšepe (m tšepe ) = 50 dikgerama
Mocheso oa tšepe = 85 o C
Boima ba metsi (m metsi ) = 50 dikgerama
Mocheso oa metsi = 29,8 o C
Mocheso o itseng oa metsi (c metsi ) = 1 cal.g -1 .°C -1
Mocheso oa ho qetela oa motsoako = 37 o C
E botsitsweng : mocheso o itseng wa tshepe (c tshepe)
Karabo :
Mocheso o lokolloang ke tšepe e mocheso o phahameng (Q e lokollotsoeng) = mocheso o monngoang ke metsi a mocheso o tlase (Q e monngoang)
m tšepe c (ΔT) = m metsi c (ΔT)
(50)(c)(85 - 37) = (50)(1)(37 - 29,8)
(c)(85 - 37) = (1)(37 - 29,8)
48 c = 7,2
c = 0,15 cal.g -1 .°C -1
Karabo e nepahetseng ke A.
12. Leqhoa la 50 gram ho 0°C le qoelisoa ka har'a ligrama tse 200 tsa metsi ho 30°C le beoa ka setshelong se khethehileng. Nka hore setshelo ha se monye mocheso. Haeba mocheso o itseng oa metsi e le 1 cal.g - 1 °C -1 'me mocheso oa ho kopana ha leqhoa e le 80 cal.g -1 , joale mocheso oa ho qetela oa motsoako ke….
A. 5°C
B. 8°C
C. 11°C
D. 14°C
E. 17°C
Puisano
Hoa tsebahala hore :
Boima ba leqhoa (m es ) = 50 dikgerama
Mocheso oa leqhoa = 0°C
Boima ba metsi (m metsi ) = 200 dikgerama
Mocheso oa metsi = 30 o C
Mocheso o itseng oa metsi (c metsi ) = 1 cal.g – 1 °C –1
Mocheso oa leqhoa le qhibilihang ( leqhoa le lenyenyane ) = 80 cal.g –1
E botsitsoe : mocheso oa ho qetela oa motsoako
Karabo :
Qala ka ho hakanya boemo ba ho qetela:
Mocheso o lokolloang ke metsi ho theola mocheso oa oona ho tloha ho 30 o C ho isa ho 0 o C:
Q e hlephileng = m metsi c metsi (ΔT) = (200)(1)(30-0) = (200)(30) = 6000
Mocheso o hlokahalang ho qhibilihisa leqhoa lohle:
Q qhibiliha = m es L es = (50)(80) = 4000
Mocheso o sebediswang ho qhibilihisa leqhoa lohle ke 4000 feela ha mocheso o fumanehang e le 6000. Ho ka fihlellwa qeto ya hore mocheso wa ho qetela wa motswako o ka hodimo ho 0 o C.
Molao-motheo o Motšo :
Mocheso o lokolloang ke metsi = mocheso o qhibilihisang leqhoa lohle + mocheso o phahamisang mocheso oa metsi a leqhoa
(m metsi )(c metsi )(ΔT) = (m es )(L es ) + (m es )(c metsi )(ΔT)
(200)(1)(30-T) = (50)(80) + (50)(1)(T-0)
(200)(30-T) = (50)(80) + (50)(T-0)
6000 – 200T = 4000 + 50T – 0
6000 – 4000 = 50T + 200T
2000 = 250T
T = 2000/250
T = 8 o C
Karabo e nepahetseng ke B.
Liphetoho boemong ba taba
13. Kerafo e ka tlase e bonts'a kamano pakeng tsa mocheso (T) le mocheso (Q) o sebelisitsoeng ho gram e le 'ngoe ea ntho e tiileng. Palo ea mocheso oa mouoane oa ntho e tiileng ke…
A. Likhalori tse 60/grama
B. Likhalori tse 70/grama
C. Likhalori tse 80 ka gram
D. 90 lik'hilojule/grama
E. Likhalori tse 100/grama
Puisano:
Mocheso oa mouoane ke bongata ba mocheso o monngoang (kapa o lokolloang) ke gram e le 'ngoe ea ntho ho fetola boemo ba eona ho tloha ho mokelikeli ho ea ho khase (kapa ho tloha ho khase ho ea ho mokelikeli).
Hoa tsebahala :
Mocheso o monngoa kapa o lokollotsoeng: Q = lik'hilojule tse 140 – lik'hilojule tse 60 = lik'hilojule tse 80
Boima ba ntho e tiileng: m = 1 gram
E botsitsoe :
Mocheso oa mouoane (L)v) lintho tse tiileng?
Jawab :
Foromo ea ho fumana mocheso oa mouoane :
Q = m Lv
Tlhaloso: Q = mocheso o monyelang kapa o lokollotsoeng, m = boima ba ntho, Lv = mocheso oa mouoane
Lv = Q / m
Lv = Likhalori tse 80 / gram e le 1
Lv = Likhalori tse 80/grama
Karabo e nepahetseng ke C.
14. Ka tlase ke kerafo ya mocheso kgahlanong le mocheso wa 1 kg ya mouoane kgatellong e tlwaelehileng. Boemo ba ho belisa ba metsi ke 2256 x 103 J/kg mme mocheso o itseng wa metsi ke 4,2 x 103 J/kg K, ebe mocheso o lokollwang phetohong ho tloha mouoaneng ho ya metsing ke…
A. 4,50 × 103 Joule
B. 5,20 × 103 Joule
C. 2,00 × 106 Joule
D. 2,26 × 106 Joule
E. 4,40 × 106 Joule
Puisano:
Hoa tsebahala :
Mocheso o chesang ka mouoane kapa mocheso o belang (L)v) = 2.256 x 103 J / lik'hilograma
Mocheso o itseng oa metsi (c) = 4200 J/kg K
Boima ba mouoane (m) = 1 kg
E botsitsoe :
Mocheso o lokollotsoe (Q)?
Jawab :
Q = m Lv
Q = (1 kg)(2.256 x 103 J/kg)
Q = 2256 x 103 Joule
Q = 2,256 x 106 Joule
Karabo e nepahetseng ke D.
15. Palo ea mocheso o monngoang ho phahamisa mocheso oa 2 kg ea metsi ho tloha ho -2 oHo tloha ho C ho isa ho 10 oC ke… Mocheso o itseng oa metsi = 4.200 J/kg Co, mocheso o itseng oa leqhoa = 2.100 J/kg Co, mocheso oa ho kopana ha metsi (LF) = 334.000 J/kg
A. 760.400 J
B. 750.000 J
C. 668.000 J
D. 600.000 J
E. 540.000 J
Puisano:
Hoa tsebahala :
Boima ba metsi (m) = 2 kg
Mocheso oa pele (T) = -2 oC
Mocheso oa ho qetela (T) = 10 oC
Mocheso o itseng oa leqhoa (c es) = 2100 J/kg Co
Mocheso o itseng oa metsi (c metsi) = 4200 J/kg Co
Mocheso oa ho kopana ha metsi (L)F) = 334.000 J/kg
E botsitsoe :
Mocheso o monyehileng (Q)?
Jawab :
Phetoho ea mocheso ho tloha ho -2 oHo tloha ho C ho isa ho 10 oC e feta mekhahlelong e 'maloa.
Mokhahlelo oa 1, mocheso oa leqhoa o eketseha ho tloha ho -2 oHo tloha ho C ho isa ho 0 oC (keketseho ea mocheso oa leqhoa e emisa moo metsi a batang, e leng 0 oC)
Mokhahlelo oa 2, leqhoa lohle lea qhibiliha (boemo ba ho tiea bo fetoha boemong ba metsi mochesong oa ntlha ea ho hoama oa metsi, e leng 0 oC)
Mokhahlelo oa 3, mocheso oa metsi o eketseha hape ho tloha ho 0 oHo tloha ho C ho isa ho 10 oC)
Kahoo ho tloha mochesong oa -2 oHo tloha ho C ho isa ho 0 oC, metsi a ntse a le boemong bo tiileng. Mochesong oa 0 oC, ho etsahala phetoho ho tloha ho tiileng ho ea ho metsi. Kamora hore boemo bo tiileng bo fetohe ho ea boemong ba metsi, mocheso oa metsi o eketseha hape ho tloha ho 0 oHo tloha ho C ho isa ho 10 oC.
Q1 = (m)(c es)(delta T) = (2 kg)(2100 J/kg Co(0) oC – (-2) oC)) = (2)(2100 J)(2) = 8400 J
Q2 = (m)(LF) = (2 lik'hilograma)(334.000 J/kg) = 668.000 J
Q3 = (m)(c metsi)(delta T) = (2 kg)(4200 J/kg Co(10) oC - 0 oC)) = (2)(4200 J)(10) = 84000 J
Mocheso o monyehileng:
P = P1 +Q2 +Q3
Q = 8400 J + 668.000 J + 84000 J
Q = 760.400 Joule
Karabo e nepahetseng ke A.
Mohloli oa lipotso:
Lipotso tsa Fisiks tsa Tlhahlobo ea Naha bakeng sa Sekolo se Phahameng sa Thuto e Phahameng/Sekolo se Phahameng sa Mosebetsi
