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Friends of the Big-Five taxonomy might say a person with positive energy is someone who is extraverted, agreeable, conscientious, emotionally stable, and open to new experience. Again, âpositive energy' is simply shorthand for âgood person.'. Now, there is of course another, deeper and more mystical, usage of the term.
If your frame of reference is system, then the work done on the system ($W$) is positive and the heat that is added to the system is also positive, which means the change in internal energy is also positive by first law of thermodynamics, which means that there is an increase in temperature.ere the first law is written as $$ \mathrm{d}U = \mathrm{d}Q - \mathrm{d}W \,. \tag{2}$$. If work is applied to the system, $\mathrm{d}W$ term becomes negative making two negatives positive, which is identical to equation (1) and heat added to the system is still positive here.