Mocheso o itseng

Mocheso o itseng (c) ke bongata ba mocheso (Q) bo hlokahalang ho phahamisa mocheso (T) oa yuniti e le 'ngoe ea boima (m) ea ntho ka tekanyo e le 'ngoe. Foromo ea c ke:

Sistimi ea Machaba ea Liyuniti ke J/Kg K.

Mocheso o itseng oa ntho o fetoha ho latela mocheso. Haeba phetoho ea mocheso e se kholo haholo, boleng bo ka nkoa bo sa fetohe. Tse latelang ke boleng ba c bakeng sa lintho tse 'maloa ka khatello ea 1 atm le mocheso oa 20 ^° C (e fumanoeng ka liteko).

Mocheso o itseng oa ntho o bontša bokhoni ba eona ba ho monya kapa ho lokolla mocheso. Ha mocheso o itseng o phahame, bokhoni ba ntho ba ho monya kapa ho lokolla mocheso bo fokotseha. Ha mocheso o itseng o le tlase, bokhoni ba ntho ba ho monya kapa ho lokolla mocheso bo ba betere. Khauta e na le mocheso o itseng o fokolang, kahoo e monya kapa e lokolla mocheso kapele. Ka lehlakoreng le leng, metsi a na le mocheso o itseng o phahameng, kahoo a monya kapa a lokolla mocheso butle.

Mohlala oa mathata

1. Mocheso o hlokahalang ho phahamisa mocheso oa 1 kg ea mokelikeli o nang le c 300 J/Kg.K ho tloha ho 20^oC e ba 30^oC ke….
Puisano
Hoa tsebahala :
E botsitsoe : mocheso (Q)
Jawab :
Foromo ea mocheso :
Likhalori tse hlokahalang ke:
Q = (1)(300)(10)
Q = 3000 Joule

2. Mokelikeli o boima ba 2 kg o futhumatsoa ho tloha mochesong oa 20^oC e ba 80^oC, e hloka mocheso oa 6 × 10⁵ Joule. Mocheso o itseng oa mokelikeli ke…
Puisano
Hoa tsebahala :
E botsitsoe : vs.
Jawab :
Foromo:
Kholo c:
c = 600.000 / (2)(60) = 600.000 / 120
c = 5000 J/Kg. K