A machine gear consists of 0.10 kg of iron and 0.16 kg of copper.How much total heat is generated in the part if its temperature increases by 35 C ? (Specific heats of iron and copper are 450 and 390 J/kg* C,respectively. )
A) 910 J
B) 3 800 J
C) 4 000 J
D) 4 400 J
Correct Answer:
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