Mienzaniso yemibvunzo pamusoro pekupisa nekupisa

Mienzaniso gumi nemishanu yemibvunzo yekupisa nekupisa

Kuenzanisa Thermometer

1. Thermometer X inoratidza -30 ^°C padanho rechando remvura uye 90 ^°C padanho remvura rinofashaira. Tembiricha ye60 ^°C paX yakaenzana ne...

A. 20 ^o C

B. 45 ^o C

C. 50 ^o C

D. 75 ^o C

E. 80 ^o C

Kukurukurirana

Zvinozivikanwa kuti:

Mvura inotonhora pa thermometer X = -30 ^o

Pombi yekufashaira yemvura pa thermometer X = 90 ^o

Mubvunzo: 60 ^o X = ….. ^o C

Mhinduro:

Pachikero cheFahrenheit, nzvimbo yekuomesa mvura i32 ^o F uye nzvimbo yekuomesa mvura i212 ^o F. Pakati penzvimbo yekuomesa nemvura nepakuomesa pane musiyano we212 ^o - 32 ^o = 180 ^o.

Pachiyero cheCelsius, nzvimbo yekuomesa mvura ndeye 0 ^o C uye nzvimbo yekuomesa mvura ndeye 100 ^o C. Pakati penzvimbo yekuomesa nemvura nekuomesa pane musiyano we100 ^o - 0 ^o = 100 ^o.

Pachiyero cheX, nzvimbo yekuomesa mvura ndeye -30 ^o X uye nzvimbo yekuomesa mvura ndeye 90 ^o X. Pakati penzvimbo yekuomesa nemvura nepakuomesa pane musiyano we 90 ^o – (-30 ^o ) = 90 ^o + 30 ^o = 120 ^o.

Chinja chikero cheX kuita chikero cheCelsius:

Mhinduro chaiyo ndiD.

Kuwedzera

2. Bhara resimbi rinodziiswa kusvika patembiricha ye80 ^o C uye kureba kwaro kunosvika 115 cm. Kana coefficient yekuwedzera kwesimbi iri 3.10 ^{-3 o} C ^-1 uye tembiricha yekutanga yesimbi iri 30 ^o C, saka kureba kwekutanga kwesimbi….

A. 100 cm

B. 101,5 cm

C. 102 cm

Kureba 102,5 cm

E. 103 cm

Kukurukurirana

Zvinozivikanwa kuti:

Tembiricha yekutanga (T ₁ ) = 30 ^o C

Kupisa kwekupedzisira (T2 ₎ = 80 ^o C

Kuchinja kwetembiricha (ΔT) = 80 ^o C – 30 ^o C = 50 ^o C

Kuwanda kwekuwedzera kwesimbi (α) = 3.10 ^{-3 o} C ^-1

Kureba kwesimbi yekupedzisira (L) = 115 cm

Zvinodiwa: Kureba kwekutanga kwesimbi (L _o )

Mhinduro:

Fomura yekuwedzera kureba:

Mhinduro chaiyo ndiA.

3. Tsvimbo yesimbi inotanga nehurefu hwe40 cm. Kana yapiswa patembiricha ye80 ^o C, kureba kwayo kunosvika 40,04 cm. Kana coefficient yekuwedzera kwesimbi iri 2,0 x 10 ^{-5 o} C ^-1 , saka tembiricha yekutanga yetsvimbo yesimbi iri….

A. 20 ^o C

B. 22 ^o C

C. 25 ^o C

D. 30 ^o C

E. 50 ^o C

Kukurukurirana

Zvinozivikanwa kuti:

Kupisa kwekupedzisira (T2 ₎ = 80 ^o C

Kureba kwekutanga (Lo ₎ = 40 cm

Kureba kwekupedzisira (L) = 40,04 cm

Kuwedzera kureba (ΔL) = 40,04 cm – 40 cm = 0,04 cm

Kuwanda kwekuwedzera kwesimbi (α) = 2,0 x 10 ^{-5 o} C ^-1

Mubvunzo: Tembiricha yekutanga (T ₁ )

Mhinduro:

Fomura yekuwedzera simbi:

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

Mhinduro chaiyo ndiD.

Kutamiswa kwekupisa neConduction

4. Matavi esimbi ane saizi imwe chete, asi akagadzirwa nesimbi dzakasiyana, akabatanidzwa sezvakaratidzwa mumufananidzo uri pazasi. Kana tambo yekupisa yesimbi I iri ka4 kupfuura tambo yesimbi II, saka tembiricha iri panosangana simbi mbiri idzi…

A. 45⁰ C

B. 40 ⁰ ​​​​C

C. 35 ⁰ C

D. 30 ⁰ C

E. 25 ⁰ C

Kukurukurirana

Zvinozivikanwa kuti:

Hunde yakafanana

Kufambisa kwesimbi kwekupisa I = 4k

Kufambisa kwesimbi kwekupisa II = k

Kupisa kwesimbi muromo I = 50 ⁰ C

Kupisa kwemuromo wesimbi II = 0 ⁰ C

Akabvunzwa: Kupisa panosangana simbi mbiri

Mhinduro:

Fomura yekufambiswa kwekupisa nekufambisa:

Tsananguro: Q/t = mwero wekutamisa kupisa, k = kutenderera kwekupisa, A = nzvimbo yepamusoro, T ₁ -T ₂ = kuchinja kwekupisa, l = kureba kwetsvimbo

Tembiricha pamuganhu P na Q:

Matavi maviri esimbi A naB ane saizi imwe chete saka nzvimbo yepamusoro (A) nehurefu (l) hwematanda acho zvinobviswa muequation.

Mhinduro chaiyo ndeiyi B.

5. Teererai chirevo chinotevera!

(1) Kufambiswa kwesimbi

(2) Musiyano wekupisa pakati pemagumo esimbi

(3) Kureba kwesimbi

(4) Huremu hwesimbi

Zvinhu zvinosarudza mwero wekupararira kwekupisa musimbi ndeizvi...

A. (1), (2) uye (3)

B. (1) uye (4)

C. (2) uye (4)

D. (3) na (4)

E. (4) chete

Kukurukurirana

Zvichibva pafomura yehuwandu hwekupisa hunopfuudzwa kuburikidza nekufambisa, zvinhu zvinosarudza huwandu hwekupisa hunopfuudzwa imhando yesimbi (k), musiyano wekupisa pakati pemagumo esimbi (T) nehurefu hwesimbi (l). Huremu hwesimbi hahuna simba.

Mhinduro chaiyo ndiA.

6. Matavi maviri ePQ ane saizi imwe chete, asi marudzi akasiyana esimbi akabatanidzwa sezvakaratidzwa mumufananidzo uri pazasi. Kana thermal conduction coefficient P iri kaviri thermal conduction coefficient Q, saka tembiricha iri pamuganhu uri pakati peP naQ...

A. 84°C

B. 78°C

C. 72°C

D. 70°C

E. 90°C

Kukurukurirana

Zvinozivikanwa kuti:

Tsvimbo dzePQ dzine saizi yakaenzana.

Kuwanda kwesimbi inotungamirwa nekupisa P (k _P ) = 2k

Kuwanda kwesimbi inotungamirwa nekupisa Q (k _Q ) = k

Mubvunzo: Tembiricha pamuganhu P na Q

Mhinduro:

Fomura yekufambiswa kwekupisa nekufambisa:

Tsananguro: Q/t = mwero wekutamisa kupisa, k = kutenderera kwekupisa, A = nzvimbo yepamusoro, T ₁ -T ₂ = kuchinja kwekupisa, l = kureba kwetsvimbo

Tembiricha pamuganhu P na Q:

Rods PQ dzine saizi imwe chete saka A na l zvinobviswa mu equation.

Hapana mhinduro chaiyo.

Kuchinja kweFomu

7. 1 kg yechando patembiricha ye0 ^o C inosanganiswa ne0,5 kg yemvura patembiricha ye0 ^o C, wobva...

A. Mamwe emvura anooma nechando

B. imwe chando inonyunguduka

C. chando chose chinonyunguduka

D. mvura yese inotonhora

E. huwandu hwechando mumvura hunoramba hwakafanana

Kukurukurirana

Izwi rekuti chando rinoreva mvura iri muchimiro chakaoma, ukuwo izwi rekuti mvura richireva mvura iri muchimiro chemvura.

Pa 0 ^° C, chando chinoshanduka kubva pachinhu chakasimba kuenda pakuva mvura. Kuti chando chishanduke, chinofanira kutora kupisa. Aizi inosanganiswa nemvura, saka chando chinofanira kutora kupisa kubva mumvura. Zvisinei, mvura iri pa 0 ^° C, saka hapana kupisa kunogona kutorwa nechando. Nokudaro, huwandu hwechando mumvura hunoramba hwakafanana.

Mhinduro chaiyo ndiE.

Nheyo yeVatema

8. Mumudziyo wesimbi une huremu hwemagiramu mazana maviri, mune magiramu zana emafuta patembiricha ye20 ^o C. Mumudziyo, magiramu makumi mashanu esimbi patembiricha ye75 ^o C anoiswa. Kana tembiricha yemudziyo ikakwira ne5 ^o C uye kupisa kwemafuta = 0,43 cal/g ^o C, saka kupisa kwesimbi kwacho...

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

Kukurukurirana

Zvinozivikanwa kuti:

Huremu hwesimbi (m) = 200 gr

Kupisa kwekutanga kwemudziyo wesimbi (T ₁ ) = 20 ^o C

Mafuta ari mumudziyo wesimbi kuitira kuti tembiricha yemafuta = tembiricha yemudziyo wesimbi.

Kupisa kwekupedzisira kwemudziyo wesimbi (T ₂ ) = 20 ^o C + 5 ^o C = 25 ^o C

Huremu hwemafuta (m) = 100 magiramu

Kupisa kwemafuta chaiwo (c mafuta) = 0,43 cal/g ^o C

Tembiricha yekutanga yemafuta (T ₁ ) = 20 ^o C

Mafuta ari mumudziyo zvekuti mafuta ari muchimiro chekupisa nemudziyo wesimbi. Saka kana tembiricha yekupedzisira yemudziyo wesimbi iri 25 ^o C, saka tembiricha yekupedzisira yemafuta iri 25 ^o C.

Kupisa kwekupedzisira kwemafuta (T ₂ ) = 20 ^o C + 5 ^o C = 25 ^o C

Huremu hwesimbi (m) = 50 magiramu

Tembiricha yekutanga yesimbi (T ₁ ) = 75 ^o C

Simbi inonyudzwa mumafuta mumudziyo, saka simbi inenge iri mukupisa kwakaenzana nemafuta nemudziyo. Saka kana tembiricha yekupedzisira yemudziyo iri 25 ^o C, saka tembiricha yekupedzisira yesimbi i25 ^o C.

Mubvunzo: Kupisa kwesimbi chaiyo (c simbi)

Mhinduro:

Kupisa kunoburitswa nesimbi:

Q = mc ΔT = (50)(c)(75-25) = (50)(c)(50) = 2500c macalorie

Kupisa kunotorwa nesimbi:

Q = mc ΔT = (200)(c)(25-20) = (200)(c)(5) = 1000c macalorie

Kupisa kunonyudzwa nemafuta:

Q = mc ΔT = (100)(0,43)(25-20) = (43)(5) = 215 macalorie

Nheyo yaBlack inoti muhurongwa hwakavharwa, hwakaparadzana, kupisa kunoburitswa nechinhu chinodziya zvakanyanya kunotorwa nechinhu chinodziya zvishoma.

Q yaburitswa = Q yabatwa

2500c = 1000c + 215

2500c – 1000c = 215

1500c = 215

c = 215/1500

c = 0,143 cal/g ^o C

Mhinduro chaiyo ndiA.

9. Girazi rine magiramu mazana maviri emvura patembiricha ye20°C rinozadzwa nemagiramu makumi mashanu echando patembiricha ye -2°C. Kana kuchinjana kwekupisa kukaitika pakati pemvura nechando chete, mushure mekunge kwaitika kuenzana, zvinotevera zvichawanikwa: (c mvura = 1 cal/gr°C; c _ice = 0,5 cal/gr°C; L = 80 cal/gr)

A. Aizi yese inonyunguduka uye tembiricha iri pamusoro pe0°C

B. chando chose chinonyunguduka uye tembiricha iri 0°C

C. Haisi chando chose chinonyunguduka uye tembiricha iri 0°C

D. tembiricha yehurongwa hwese iri pasi pe0°C

E. Mamwe emvura anooma nechando uye tembiricha yemuchina wacho iri 0°C

Kukurukurirana

Zvinozivikanwa kuti:

Huremu hwemvura (m _mvura ) = 200 magiramu

Tembiricha yemvura (T _mvura ) = 20 ^o C

Kupisa kwemvura chaiyo (c _mvura ) = 1 cal/gr°C

Huwandu hwechando (m _es ) = 50 gramu

Kupisa kwechando (T _es ) = -2 ^o C

Kupisa kwechando (c _es ) = 0,5 cal/gr°C

Kupisa kwemvura inonyunguduka (L) = 80 cal/gr

Mhinduro:

Pisa kuti usimudzire tembiricha yechando kubva pa -2 ^o C kusvika pa 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 = 50 makoriori

Pisa kuti chando chose chinyunguduke mumvura:

Q = m L = (50 magiramu)(80 macalorie/giramu) = 4000 macalorie

Pisa kuti uderedze tembiricha yemvura yese kubva pa20 ^o C kusvika pa0 ^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 macalorie

Chiratidzo chakanaka chinoreva kupisa kwawedzerwa, chiratidzo chisina kunaka chinoreva kupisa kwaburitswa.

Kupisa kunodiwa kuti chando chikwidze kusvika pa 0 ^° C macalorie makumi mashanu, uye kupisa kunodiwa kuti chando chinyunguduke macalorie zviuru zvina. Nokudaro, kupisa kwese kunodiwa kuti chando chinyunguduke macalorie zviuru zvina nemakumi mashanu. Kupisa kuripo ndiko kupisa kunoburitswa nemvura, inova macalorie zviuru zvina.

Zvinogona kugumiswa kuti kupisa kuripo hakuna kukwana kuti chando chose chinyunguduke kuita mvura. Chando chikuru chanyunguduka kuita mvura, asi chikamu chidiki hachina kunyunguduka. Mvura iyi nechando chasara zviri pa0 ^° C.

Mhinduro chaiyo ndiC.

10. Chidimbu chearuminiyamu chine huremu hwemagiramu mazana maviri netembiricha ye20 ^o C chinoiswa mumudziyo wemvura ine huremu hwemagiramu zana netembiricha ye80 ^o C. Kana kupisa kwearuminiyamu kuri 0,22 cal/g ^o C uye kupisa kwemvura kuri 1 cal/g ^o C, saka tembiricha yekupedzisira yearuminiyamu iri pedyo ne...

A. 20 ^o C

B. 42 ^o C

C. 62 ^o C

D. 80 ^o C

E. 100 ^o C

Kukurukurirana

Zvinozivikanwa kuti :

Huremu hwearuminiyamu = 200 magiramu

Kupisa kwearuminiyamu = 20 ^o C

Huremu hwemvura = 100 magiramu

Kupisa kwemvura = 80 ^o C

Kupisa kwakananga kwearuminiyamu = 0,22 cal/g ^o C

Kupisa kwemvura chaiyo = 1 cal/g ^o C

Akabvunzwa : tembiricha yekupedzisira yearuminiyamu

Mhinduro :

Aruminiyamu iri mumvura saka tembiricha yekupedzisira yearuminiyamu = tembiricha yekupedzisira yemvura.

Kupisa kunoburitswa nemvura inodziya zvakanyanya (Q inoburitswa) = kupisa kunoburitswa nearuminiyamu inodziya zvishoma (Q inoburitswa)

m _mvura c (ΔT) = m _aruminiyamu 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

Mhinduro chaiyo ndiC.

11. Mari yesimbi ye50g patembiricha ye85°C inonyikwa mu50g yemvura patembiricha ye29,8°C (kupisa kwemvura chaiyo = 1 cal.g ^—1 .°C ^—1 ). Kana tembiricha yekupedzisira iri 37°C uye mudziyo usingatore kupisa, saka kupisa kwesimbi chaiyo…

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

Kukurukurirana

Zvinozivikanwa kuti :

Huremu hwesimbi (m _simbi ) = 50 magiramu

Kupisa kwesimbi = 85 ^o C

Huremu hwemvura (m _mvura ) = 50 magiramu

Kupisa kwemvura = 29,8 ^o C

Kupisa kwemvura chaiyo (c _mvura ) = 1 cal.g ^-1 .°C ^-1

Kupisa kwekupedzisira kwemusanganiswa = 37 ^o C

Akabvunzwa : kupisa kwesimbi chaiyo (c simbi)

Mhinduro :

Kupisa kunoburitswa nesimbi inodziya tembiricha yepamusoro (Q inoburitswa) = kupisa kunonyudzwa nemvura inodziya tembiricha yakaderera (Q inonyudzwa)

m _simbi c (ΔT) = m _mvura 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

Mhinduro chaiyo ndiA.

12. Chidimbu chechando che50 gram pa0°C chinonyikwa mumagiramu mazana maviri emvura pa30°C chakaiswa mumudziyo wakakosha. Ngatitii mudziyo wacho hautore kupisa. Kana kupisa kwemvura kuri 1 cal.g ^{- 1} °C ^-1 uye kupisa kwechando kuri 80 cal.g ^-1 , saka tembiricha yekupedzisira yemusanganiswa i….

A. 5°C

B. 8°C

C. 11°C

D. 14°C

E. 17°C

Kukurukurirana

Zvinozivikanwa kuti :

Huwandu hwechando (m _es ) = 50 gramu

Kupisa kwechando = 0°C

Huremu hwemvura (m _mvura ) = 200 magiramu

Kupisa kwemvura = 30 ^o C

Kupisa kwemvura chaiyo (c _mvura ) = 1 cal.g ^{– 1} °C ^–1

Kupisa kwechando chakanyunguduka (L _ice ) = 80 cal.g ^–1

Akabvunza : tembiricha yekupedzisira yemusanganiswa

Mhinduro :

Kutanga fungidzira mamiriro ekupedzisira:

Kupisa kunoburitswa nemvura kuderedza tembiricha yayo kubva pa30 ^o C kusvika pa0 ^o C:

Q _{yakasununguka} = ​​m _mvura c _mvura (ΔT) = (200)(1)(30-0) = (200)(30) = 6000

Kupisa kunodiwa kuti chando chose chinyunguduke:

Q _melt = m _es L _es = (50) (80) = 4000

Kupisa kunoshandiswa kunyungudutsa chando chose i4000 chete ukuwo huwandu hwekupisa huripo huri 6000. Zvinogona kugumiswa kuti tembiricha yekupedzisira yemusanganiswa iri pamusoro pe0 ^o C.

Nheyo yeVatema :

Kupisa kunoburitswa nemvura = kupisa kunonyungudutsa chando chose + kupisa kunokwidza tembiricha yemvura yechando

(m _mvura )(c _mvura )(ΔT) = (m _es )(L _es ) + (m _es )(c _mvura )(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

Mhinduro chaiyo ndeiyi B.

Kuchinja kwemamiriro ezvinhu

13. Girafu riri pazasi rinoratidza hukama huripo pakati pekupisa (T) nekupisa (Q) zvinoshandiswa pa 1 gram yechinhu chakasimba. Huwandu hwekupisa kwechinhu chakasimba…
A. 60 macalorie/giramu
B. 70 macalorie/giramu
C. 80 macalorie/giramu
D. 90 macalorie/giramu
E. 100 macalorie/giramu
Kukurukurirana:Kupisa kwekupfuta kwemhepo (vaporization) huwandu hwekupisa hunotorwa (kana kuburitswa) ne 1 gram yechinhu kuti chishandure mamiriro acho kubva pamvura kuenda kugasi (kana kubva pagasi kuenda kumvura).
Zvinozivikanwa :
Kupisa kunonyudzwa kana kuburitswa: Q = 140 macalorie - 60 macalorie = 80 macalorie
Huremu hwechisimbiso: m = 1 gramu
Akabvunzwa :
Kupisa kwemhepo (L)_v) zvinhu zvakasimba?
Jawab :
Fomura yekuona kupisa kwemhepo :
Q = m L_v
Tsananguro: Q = kupisa kunonyudzwa kana kuburitswa, m = huremu hwechinhu, L_v = kupisa kwemhepo
L_v = Q / m
L_v = 80 macalorie / 1 gramu
L_v = 80 macalorie/giramu
Mhinduro chaiyo ndiC.

14. Pazasi pane girafu yekupisa nekupisa kwe1 kg yeutsi padanho repamusoro. Pombi yekufashaira kwemvura i2256 x 10³ J/kg uye kupisa kwemvura chaiyo ndeye 4,2 x 10³ J/kg K, zvino kupisa kunoburitswa mukuchinjwa kubva muutsi kuenda kumvura ndiko…
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

Kukurukurirana:
Zvinozivikanwa :
Kupisa nemhepo kana kupisa kuri kufashaira (L)_v) = 2.256 x 10³ J/kg
Kupisa kwemvura chaiyo (c) = 4200 J/kg K
Huremu hweutsi (m) = 1 kg
Akabvunzwa :
Kupisa kwakaburitswa (Q)?
Jawab :
Q = m L_v
Q = (1 kg)(2.256 x 10³ J/kg)
Q = 2256 x 10³ Joule
Q = 2,256 x 10⁶ Joule
Mhinduro chaiyo ndiD.

15. Huwandu hwekupisa hunotorwa kuti hukwidze tembiricha ye2 kg yemvura kubva pa -2 ^oC kusvika ku10 ^oC iri… Kupisa kwemvura chaiyo = 4.200 J/kg C^o, kupisa kwechando chakananga = 2.100 J/kg C^o, kupisa kwekubatana kwemvura (L_F) = 334.000 J/kg
A. 760.400 J
B. 750.000 J
C. 668.000 J
D. 600.000 J
E. 540.000 J
Kukurukurirana:
Zvinozivikanwa :
Huremu (m) hwemvura = 2 kg
Tembiricha yekutanga (T) = -2 ^oC
Kupisa kwekupedzisira (T) = 10 ^oC
Kupisa kwechando (c es) = 2100 J/kg C^o
Kupisa kwemvura chaiyo (c mvura) = 4200 J/kg C^o
Kupisa kwekubatana kwemvura (L)_F) = 334.000 J/kg
Akabvunzwa :
Inonyudzwa nekupisa (Q)?
Jawab :
Kuchinja kwetembiricha kubva pa -2 ^oC kusvika ku10 ^oC inopfuura nematanho akati wandei.
Danho 1, tembiricha yechando inokwira kubva pa -2 ^oC kusvika ku0 ^oC (kuwedzera kwekupisa kwechando kunomira panzvimbo yechando yemvura, inova 0 ^oC)
Danho rechipiri, chando chose chinonyunguduka (chimiro chakasimba chinoshanduka kuita chimiro chemvura panguva yekupisa kwechando kwemvura, inova 0 ^oC)
Danho rechitatu, tembiricha yemvura inokwira zvakare kubva pa0 ^oC kusvika ku10 ^oC)
Saka kubva patembiricha ye -2 ^oC kusvika ku0 ^oC, mvura ichiri muchimiro chakasimba. Patembiricha 0 ^oC, pane shanduko kubva pachinhu chakasimba kuenda kuchinwiwa. Mushure mekunge chinhu chakasimba chachinja kuenda kuchinwiwa, tembiricha yemvura inowedzera zvakare kubva pa0 ^oC kusvika ku10 ^oC.
Q₁ = (m)(c es)(delta T) = (2 kg)(2100 J/kg C^o)(0 ^oC – (-2) ^oC)) = (2)(2100 J)(2) = 8400 J
Q₂ = (m)(L_F) = (2 kg)(334.000 J/kg) = 668.000 J
Q₃ = (m)(c mvura)(delta T) = (2 kg)(4200 J/kg C^o)(10 ^oC - 0 ^oC)) = (2)(4200 J)(10) = 84000 J
Kupisa kunonyudzwa:
Mubvunzo = Mubvunzo₁ +Q₂ +Q₃
Q = 8400 J + 668.000 J + 84000 J
Q = 760.400 Joule
Mhinduro chaiyo ndiA.

Kwakabva mubvunzo:

Mibvunzo yeNational Examination Physics yeChikoro Chesekondari/Chikoro Chepamusoro Chebasa