A Machine Part Consists of 0

question 36

Multiple Choice

A machine part consists of 0.10 kg of iron (of specific heat 470 J/kg ∙ K ) and 0.16 kg of copper (of specific heat 390 J/kg ∙ K) .How much heat must be added to the gear to raise its temperature from 18°C to 53°C?

• A)910 J
• B)3800 J
• C)4000 J
• D)4400 J