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Physics

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In an experiment Rahul burnt 4 kg fuel and the heat produced was measured to be 160,000 kJ and Raj burnt 2 kg of fuel and heat produced was measured to be 100,000kJ. Calculate the net calorific value of the fuels.

Answer :

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Today at 1:19 AM

Answer:

The net calorific value of the fuel 1 is 40000 kilojoules per kilogram.

The net calorific value of the fuel 2 is 50000 kilojoules per kilogram.

Explanation:

The net calorific value is equal to the heat produced ([tex]Q[/tex]), in kilojoules, divided by the mass of the burnt fuel ([tex]m[/tex]). We proceed to calculate the net calorific value of each fuel:

Fuel 1 ([tex]m = 4\,kg[/tex], [tex]Q = 160000\,kJ[/tex])

[tex]L = \frac{160000\,kJ}{4\,kg}[/tex]

[tex]L = 40000\,\frac{kJ}{kg}[/tex]

The net calorific value of the fuel 1 is 40000 kilojoules per kilogram.

Fuel 2 ([tex]m = 2\,kg[/tex], [tex]Q = 100000\,kJ[/tex])

[tex]L = \frac{100000\,kJ}{2\,kg}[/tex]

[tex]L = 50000\,\frac{kJ}{kg}[/tex]

The net calorific value of the fuel 2 is 50000 kilojoules per kilogram.

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