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Chapter 10: Q.39 (page 257)

How much work is done by the environment in the process shown inFIGUREEX10.39? Is energy transferred from the environment to the system or from the system to the environment?

Short Answer

Expert verified

The work done by the environment= -1J.

Step by step solution

01

Kinetic energy : Given information

Initial kinetic energy, Ki=4J

Initial potential energy, Ui=1J

Final potential energy, Uf=2J

Final kinetic energy,Kf=1J

Final thermal energy,鈭�Eth=1J

The work that an object can perform as a result of its mobility is measured by its kinetic energy.

02

Explanation :

The entire energy in any process is always conserved, according to the law of energy conservation. As a result, the process's final kinetic energy is computed as

Ki+Ui+Wext=Kf+Uf+鈭�Eth

Substituting the values from the energy bar chart given,

4+1+Wext=1+2+1Wext=-1J

Hence, work done by the environment is-1J.

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