Kupisa Kuwanda Kupisa Kwakasiyana Kuchinja kwekupisa - Matambudziko neMhinduro

9 Kupisa Kuwanda Kupisa Kwakasiyana Kuchinja kwekupisa - Matambudziko neMhinduro

1. Mutobvu we2 kg unodziiswa kubva 50^oC kuti 100^oC. The kupisa chaiko yemutobvu ndeye 130 J.kg^{-1 o}C^-1. Ngani kupisa inotorwa nemutobvu?

Zvinozivikanwa:

Huremu (m) = 2 kg

Kupisa chaiko (c) = 1 3 0 J.kg ^-1 C ^-1

Kuchinja kwetembiricha ( Δ T) = 100 ^o C – 50 ^o C = 50 ^o C

Kudiwa: Kupisa (Q)

Solution:

Q = mc Δ T

Q = kupisa , m = uremu, c = kupisa chaiko , Δ T = shanduko yekupisa

Kupisa kunotorwa nemutobvu:

Q = (2 kg)(1 3 0 J.kg ^-1 C ^-1 )(50 ^o C)

Q = (100)(1 3 0)

Q = 1 3,000 Joules

Q = 1.3 x ¹⁰⁴ Joules

2. Kupisa kwemhangura chaiyo i390 J/k g ^o C, kuchinja kwekupisa i40 ^o C. Kana mhangura ikatora 40 Joules yekupisa, huremu hwemhangura hwakaita sei!

Zvinozivikanwa:

Kupisa kwemhangura (c) = 390 J/k g ^o C

Kuchinja kwetembiricha ( ΔT ) = 40 ^o C

Kupisa ( Q) = 40 J

Zvinodiwa: Huremu (m) hwemhangura

Solution:

Q = mc Δ T

40 J = (m)( 390 J/k g ^o C)(40 ^o C)

40 = (m)( 390 /k g)(40)

40 = (m)( 390 /kg )(4)

40 = (m)( 1560/kg )

m = 40 / 1560

m = 0.026 kg

m = magiramu makumi maviri nematanhatu

3. Tembiricha yekutanga yemagiramu makumi maviri emvura i30 ^o C. Kupisa kwemvura chaiyo i1 cal g ^{-1 o} C ^-1 . Kana mvura ikatora macalorie mazana matatu ekupisa, sarudza tembiricha yekupedzisira!

Zvinozivikanwa:

Huremu (m) = 20 gr

Tembiricha yekutanga (T1 ₎ = 30 ^o C

Kupisa kwemvura chaiyo (c) = 1 cal gr ^{-1 o} C ^-1

Kupisa (Q) = 300 cal

Zvinodiwa: Tembiricha yekupedzisira yemvura

Solution:

Q = mc ΔT

300 cal = (20 gr)( 1 cal gr ^{-1 o} C ^-1 )( T ₂ -30 )

300 = (20)(1)( T ₂ -30)

300 = 20 ( T ₂ -30 )

300 = 20 T ₂ - 600

300 + 600 = 20T ₂

900 = 20T ₂

T ₂ = 900 / 20

T ₂ = 45

Kuchinja kwekupisa kuri pakati pe45 ^° C – 30 ^° C = 15 ^° C.

4. Tkuchinja kwekupisa yemvura yegungwa is 1^oC mvura painotora maJoules mazana matatu nemapfumbamwe ekupisa. Kupisa kwemvura yegungwa ndiko 3.9 × 10³ J/kg°C, chii chinonzi huremu hwemvura yegungwa.

Zvinozivikanwa:

Kuchinja kwetembiricha ( ΔT ) = 1 ^o C

Kupisa (Q) = 3900 Joule

Kupisa kwemvura yegungwa (c) = 3.9 x 10 ³ J/ k g°C = 3900 J/Kg°C

Zvinodiwa: Misa (m)

Solution:

Q = mc Δ T

Q = kupisa , m = huremu, c = kupisa kwakananga , Δ T = shanduko yekupisa

m = Q / c Δ T = 3900 / (3900)(1) = 3900 / 3900 = 1 kg

5. Mhangura ye2-kg inonwisa 39,000 J yekupisa pa30°C. Kana kupisa kwemhangura kuri 390 J/kg °C, tembiricha yekupedzisira yemhangura ndeyei…

Zvinozivikanwa:

Huremu (m) = 2 kg

Tembiricha yekutanga (T ₁ ) = 30 ^o C

Kupisa (Q) = 39,000 Joule

Kupisa kwakananga (c) kwemhangura = 390 J/kg ^o C

Zvinodiwa : Tembiricha yekupedzisira ( _T2 )

Solution:

Q = mc ΔT

Q = kupisa , m = huremu, c = kupisa kwakananga , ΔT = shanduko yekupisa

Q = mc ΔT = mc (T ₂ – T ₁ )

39,000 = (2)( 390)(T ₂ - 30)

100 = (2)(1)(T ₂ - 30)

100 = (2)(T ₂ - 30)

50 = T ₂ - 30

T ₂ = 50 + 30

T ₂ = 80 ^o C

6. Mvura ine 5 -kg inodziiswa kubva pa15°C kusvika 40°C. Chii chinonzi kupisa kunotorwa nemvura. Kupisa kwemvura chaiyo i4.2 × 10 ³ J/Kg° C.

Zvinozivikanwa:

Huremu (m) = 5 kg

Tembiricha yekutanga (T1 ₎ = 15°C

Kupisa kwekupedzisira (T2 ₎ = 40°C

Kupisa kwemvura chaiyo (c) = 4.2 × 10 ³ J/kg° C

Kudiwa: Kupisa (Q)

Solution:

Q = mc ΔT

Q = (5 kg)( 4.2 × 10 ³ J/kg°C)(40°C – 15°C)

Q = (5)( 4.2 × 10 ³ J)(25)

Q = 525 x 10 ³ J

Q = 525,000 Joule

7. Mvura ine 2 -kg inodziiswa kubva pa24°C kusvika 90°C. Chii chinonzi kupisa kunotorwa nemvura. Kupisa kwemvura chaiyo i4.2 × 10 ³ J/Kg° C.

Zvinozivikanwa:

Huremu (m) = 2 kg

Tembiricha yekutanga (T1 ₎ = 24°C

Kupisa kwekupedzisira (T2 ₎ = 90°C

Kupisa kwemvura chaiyo (c) = 4,200 Joules/kg°C

Kudiwa :: Kupisa (Q)

Solution:

Q = m c ΔT

Q = (2 kg)( 4,200 Joules/kg°C)(90°C – 24°C)

Q = (2 kg)( 4,200 Joules/kg°C)(66°C)

Q = (132)( 4,200 Joules)

Q = 554,400 Joule

8. Mvura ine magiramu mashanu inodziiswa kubva pa10°C kusvika 40°C. Chii chinonzi kupisa kunotorwa nemvura. Kupisa kwemvura chaiyo i1 × 10 ³ cal / g r ° C.

Zvinozivikanwa:

Huremu (m) = magiramu makumi maviri

Tembiricha yekutanga (T ₁ ) = 10 ^o C

Kupisa kwekupedzisira (T2 ₎ = 40 ^o C

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

Kudiwa : Kupisa

Solution:

Q = mc ΔT

Q = (5 gramu)( 1 cal/ gr°C)(40 ^o C – 10 ^o C)

Q = (5)( 1 c al)(30)

Q = 150 makoriyori

9. Mvura ine 0.2 -kg inonwisa 42,000 Joules yekupisa pa25 ^o C. Kupisa kwemvura chaiyo i4200 J/kg ^o C, chii chinonzi tembiricha yekupedzisira yemvura.

Zvinozivikanwa:

Huremu hwemvura (m) = 0.2 kg

Kupisa (Q) = 42,000 Joule

Kupisa kwemvura chaiyo (c) = 4200 J/kg ^o C

Tembiricha yekutanga (T ₁ ) = 25 ^o C

Zvinodiwa: Tembiricha yekupedzisira ( _T2 )

Solution:

Q = mc ΔT = mc (T ₂ – T ₁ )

Mubvunzo = kupisa, m = huremu, c = kupisa chaiko, ΔT = kuchinja kwekupisa, T₁ = tembiricha yekutanga, T₂ = tembiricha yekupedzisira

Q = mc (T ₂ - T ₁ )

42,000 = (0.2)(4200)(T ₂ - 25)

42,000 = 840 (T ₂ - 25)

42,000 = 840 T ₂ - 21,000

42,000 + 21,000 = 840 T ₂

63,000 = 840 T ₂

T ₂ = 63,000 / 840

T ₂ = 75 ^o C

1. Kuchinja zviyero zvekupisa
2. Linear kuwedzera
3. Kuwedzera kwenzvimbo
4. Kuwedzera inzwi
5. Heat
6. Kuenzana kwekupisa kwemuchina
7. Kupisa kwakananga uye kugona kupisa
8. Kupisa kwakahwanda, kupisa kwekusanganiswa, kupisa kwekupfuta
9. Kuchengetedza simba rekutamisa kupisa