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If Q = 45 W and The values of U and A are 10 and 2.5 with their respective SI units. What is the temperature difference between system and surrounding?

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If Q = 45 W and The values of U and A are 10 and 2.5 with their respective SI units. What is the temperature difference between system and surrounding?

(a) 1.8 Degree Celsius

(b) 1.8 Degree Fahrenheit

(c) 1.8 Degree Rankine

(d) None of the mentioned

This question was addressed to me by my school teacher while I was bunking the class.

The origin of the question is Energy Balances in section Energy Balances of Chemical Process Calculation

1 Answer

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Right answer is (a) 1.8 Degree Celsius

The explanation: T2-T1 = 1.8 Degree Celsius, Q = UA(T2-T1).

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