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 thermal energy 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
B
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a. True b. False Indicate whether the statement is true or false
The controversial book of this famous person, published in 1543 (the year of his death), suggested that Earth and other planets orbit the Sun
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