Question

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Answer 1

Answer:

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Answer 2

Answer:

fuel B is more effective

Given :-

Mass of Both fuels = 4 kg

Heat produced by fuel A = 60,000 kj

Heat produced by fuel B = 84,000 kj

To find :-

Calorific value of each fuel

Which fuel is more efficient and why

Analysis :-

The calorific value of of a fuel is the amount of heat produced by buring 1 kg of the fuel

The fuel which has high calorific value is more efficient.

Therefore, after finding out the calorific value of each fuel, we can find out which fuel is more efficient.

Solution :-

\boxed{\text{Calorific Value = $\frac{Heat\: Produced}{Mass\:of\:fuel}$}}

Calorific Value =

Massoffuel

HeatProduced

Calorific Value of fuel A :

\begin{gathered}\rightarrow \frac{\cancel{60000}}{\cancel{4}} \\ \rightarrow 5000\:kj/kg \end{gathered}

→

4

60000

→5000kj/kg

Calorific Value of fuel B :

\begin{gathered}\rightarrow \frac{\cancel{84000}}{\cancel{4}} \\ \rightarrow 21000\:kj/kg\end{gathered}

→

4

84000

→21000kj/kg

______________________________________

Calorific Value of fuel B > Fuel A

\therefore∴ Fuel B is more efficient because it has more calorific value.

Explanation:

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