4 Mienzaniso yemibvunzo pamusoro pekupisa kwakahwanda, kupisa kwekubatana, kupisa kweutsi
1. Huwandu hwekupisa hunofanira kunyudzwa kuti huchinje mamiriro e1 gram yegoridhe kubva pakuva yakasimba kuenda kumvura ndeye….. Kupisa kwegoridhe kunonyunguduka = 64,5 x 10 3 J/kg
Kukurukurirana
Zvinozivikanwa kuti:
Huremu hwegoridhe (m) = 1 gramu = 1 x 10 -3 kg
Kupisa kwekusanganiswa kwegoridhe (L F ) = 64,5 x 10 3 J/kg
Mubvunzo: Kupisa (Q) kunotorwa negoridhe
Mhinduro:
Q = m L F
Q = (1 x 10 -3 kg)(64,5 x 10 3 J/kg)
Q = 64,5 Joule
2. Huwandu hwekupisa hunofanira kuburitswa ne 1 gram ye mercury kuti ichinje mamiriro ayo kubva pamvura kuita yakasimba nde….. Kupisa kwekubatana kwe mercury = 11,8 x 10 3 J/kg
Kukurukurirana
Zvinozivikanwa kuti:
Huremu hwemercury (m) = 1 gram = 1 x 10 -3 kg
Kupisa kwekusanganiswa kwemercury (L F ) = 11,8 x 10 3 J/kg
Mumubvunzo : Kupisa (Q) kunoburitswa nemercury
Mhinduro:
Q = m L F
Q = (1 x 10 -3 kg)(11,8 x 10 3 J/kg)
Q = 11,8 Joule
3. Kupisa kunonyungudika kuti kupere 1 kg yemvura….. Kupisa kweutsi hwemvura = 2256 x 10 3 J/kg
Kukurukurirana
Zvinozivikanwa kuti:
Huremu hwemvura (m) = 1 kg
Kupisa kwemvura (L V ) = 2256 x 10 3 J/kg
Mubvunzo ndewokuti: Kupisa (Q) kunotorwa nemvura
Mhinduro:
Q = m L V
Q = (1 kg)( 2256 x 10 3 J/kg)
Q = 2256 x 10 3 Joule
4. Kupisa kunoburitswa kuti kunyungudise 1 gramu yegesi yenitrogen ndiko….. Kupisa kwekupfungaira kwenitrogen = 200 x 10 3 J/kg
Kukurukurirana
Zvinozivikanwa kuti:
Huremu hwemvura (m) = 1 gramu = 1 x 10 -3 kg
Kupisa kwemhepo ine nitrogen (L V ) = 200 x 10 3 J/kg
Mumubvunzo : Kupisa (Q) kunoburitswa negasi renitrogen
Mhinduro:
Q = m L V
Q = (1 x 10 -3 kg)( 200 x 10 3 J/kg)
Q = 200 Joule
