Question

A heat Engine performs 2700 Joules of useful work, if 9000 Joules of heat is added to the engine,
then the efficiency of the engine will be

Answer 1

The efficiency of the engine will be 30 %

EXPLANATION

Formula :

$\Large{\boxed{\sf{ n = \frac{W \: out}{E \: in} \times 100 \% }}}$

$\:$

We Know :

W out = 2.700 J

E in = 9.000 J

$\:$

Question :

n = ...?

$\:$

Answer :

$\sf{ n = \frac{W \: out}{E \: in} \times 100 \%}$

$\sf{ n = \frac{2.700 \: J}{9.000} \times 100 \%}$

$\sf{ n = 0,3 \times 100 \%}$

$\sf{ n = 30 \%}$

$\:$

So, the efficiency of the engine will be 30 %

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Details

• Subject : Physic
• Class : -
• Theory : Effort and Energy
• Keywords : efficiency of the engine, Joule, effort, energy