The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?A.2500 kgB.250 kgC.25 kgD.2.5 kg
Question
The total amount of heat produced by a fuel having a calorific value of 20 kJ kg 1 was found to be 50,000 joules. How much fuel was burnt?A.2500 kgB.250 kgC.25 kgD.2.5 kg
Solution
To solve this problem, we need to use the formula:
Amount of fuel burnt = Total heat produced / Calorific value of fuel
Given that the total heat produced is 50,000 joules (or 50 kJ, since 1 kJ = 1000 joules) and the calorific value of the fuel is 20 kJ/kg, we can substitute these values into the formula:
Amount of fuel burnt = 50 kJ / 20 kJ/kg = 2.5 kg
So, the answer is D. 2.5 kg.
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