How much energy is required to heat 1.2kg iron from 24degC to 54degC
Physics
Heat and Energy ?
2020-06-01 7:48 pm
回答 (2)
2020-06-01 8:47 pm
Refer to: http://www2.ucdsb.on.ca/tiss/stretton/database/Specific_Heat_Capacity_Table.html
Specific heat capacity of iron = 0.444 J/g°C
Energy required, E
= m c ΔT
= (1.2 × 1000 g) × (0.444 J/g°C) × [(54 - 24) °C]
= 16 × 1000 J
= 16 kJ
Specific heat capacity of iron = 0.444 J/g°C
Energy required, E
= m c ΔT
= (1.2 × 1000 g) × (0.444 J/g°C) × [(54 - 24) °C]
= 16 × 1000 J
= 16 kJ
2020-06-01 8:47 pm
by Q = ms∆t
=>Q = 1.2 x 460.55 x (54 - 24)
=>Q = 16579.80 J
=>Q = 1.2 x 460.55 x (54 - 24)
=>Q = 16579.80 J
收錄日期: 2021-04-18 18:36:34
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20200601114833AA5RuF3