can you GREET my three classmate? only need is couple sentence for each person
October 17, 2020
Projectile motion in two dimensions how the effect of air resistance and absolute velocity versus relative velocity.
October 17, 2020

The Carnot cycle is the most efficient heat engine cycle because:
(a) the entropy of the working fluid (gas) never changes.
(b) it’s the only heat cycle for which energy is conserved.
(c) there is no waste heat emitted during a Carnot cycle.
(d) the work done by the working fluid during a Carnot cycle equals the heat input during
the cycle.
(e) the entropy of the universe (working gas and external environment) doesn’t change during
any step of the Carnot cycle.


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