In a particular 24 hour period a migratory bird does 0.3 MJ of work and it loses

Question

In a particular 24 hour period a migratory bird does 0.3 MJ of work and it loses 2.7 MJ of heat to the environment. Assuming that the bird remains at a constant temperature, with what average efficiency did the bird work?
Thank you so much, please show working if possible. In a particular 24 hour period a migratory bird does 0.3 MJ of work and it loses 2.7 MJ of heat to the environment. Assuming that the bird remains at a constant temperature, with what average efficiency did the bird work?
Thank you so much, please show working if possible. In a particular 24 hour period a migratory bird does 0.3 MJ of work and it loses 2.7 MJ of heat to the environment. Assuming that the bird remains at a constant temperature, with what average efficiency did the bird work?
Thank you so much, please show working if possible.

Explanation / Answer

Efficiency =(Q1-Q2)/Q1

Q2 = 2.7 Mj

Q1 -Q2 =0.3Mj

Therefore Q1= 2.7+.3 =3.0Mj

efficiency =0.3/3 =0.1

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