1. The problem statement, all variables and given/known data In the operation of a heat engine there is a heat flow out of a reservoir and a mechanical work W is done.Explain why this process does not violate the Kelvin Planck statement of the 2nd law. 2. Relevant equations 3. The attempt at a solution My attempts:Please check if I am correct Because in addition to the hot reservoir from which heat flows into the system, the heat engine also discards heat into a second colder reservoir during its cycle. Thus, it uses the second reservoir required by the Kelvin Planck statement.