Question: An insulated pistoncylinder device initially contains 30 L of air at 120 kPa and 27C. Air is now heated for 5 min by a 50-W

An insulated piston–cylinder device initially contains 30 L of air at 120 kPa and 27°C. Air is now heated for 5 min by a 50-W resistance heater placed inside the cylinder. The pressure of air is maintained constant during this process, and the surroundings are at 27°C and 100 kPa. Determine the energy destroyed during this process.

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