A thermodynamical system performs work and at the time exchanges energy to the outside environment ther is more additional help or changes in terms of fuel supply or an increase in the temp of the system the work done by the system on the environment is 1.5 x 10^ 6 while the systems internal energy is increased by 5.5 x 10^ 6 J how much heat is exchanged between the system and the environment? Pls indicate the direction of the heat flow?

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