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## Homework Statement

Is this equation correct for the 1st Law of Thermodynamics for an Open System (Control Volume):

Q - W + m

_{in}(h + 1/2(c^2) + gz)

_{in}- m

_{out}(h + 1/2(c^2) + gz)

_{out}= Δ(U 1/2(c^2) + gz).

## Homework Equations

None really.

## The Attempt at a Solution

This isn't so much an assignment question as a possible discrepancy in the notes. I would've thought this Δ(U 1/2(c^2) + gz) should be Δ(U 1/2(mc^2) + mgz), am I correct in thinking that or not? Thanks.