Recent content by arka.12

  1. A

    Suppose i have a bucket full of water in a closed room,the water is

    You have mentioned that the room was closed. though it was closed it was not a absolutely closed system..... The tem. of the room has to increased a little bit as the tem of the bucket has falllen down......
  2. A

    Why is cooling the gas necessary for efficient heat engines?

    As the process is not irreversible so we have to cooled down the gas in order to get the energy cosnt.
  3. A

    2nd law of thermodynamics why?

    if you allow to extract heat from a reservoir without any work done then the most fundamental principle of energy conservation will not be valid......
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