One of the moving parts of an engine contains 1.60 kg of aluminum and 0.300 kg o
ID: 1333072 • Letter: O
Question
One of the moving parts of an engine contains 1.60 kg of aluminum and 0.300 kg of iron. The part can be safely operated at a maximum temperature of 210°C. How much heat is required to raise its temperature from 20.0°C to 210°C? The specific heat capacity of aluminum is 900 J/kg · K, and of iron is 470 J/kg · K.
9.10 x 102 J
2.01 x 106 J
2.68 x 104 J
3.00 x 105 J
One of the moving parts of an engine contains 1.60 kg of aluminum and 0.300 kg of iron. The part can be safely operated at a maximum temperature of 210°C. How much heat is required to raise its temperature from 20.0°C to 210°C? The specific heat capacity of aluminum is 900 J/kg · K, and of iron is 470 J/kg · K.
9.10 x 102 J
2.01 x 106 J
2.68 x 104 J
3.00 x 105 J
Explanation / Answer
4th option 3.00 x 10^5 J is the correct answer.
here is the explanation.
heat required = m1*C1*dT + m2*C2*dT
= 1.6*900*(210-20) + 0.3*470*(210-20)
= 3*10^5 J
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