- #1

gloppypop

- 5

- 0

## Homework Statement

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2-3-15

## Homework Equations

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P = power. W = work. U = internal energy. S = entropy. t = time. Q = heat. T = temperature. F = force. d = distance.

P = ΔW/Δt= ΔU/Δt

ΔS = ΔQ/T

dm/dt = ρ⋅dV/dt

W = F ⋅ d

ΔU = Q - W

Where m is mass, V is volume, and ρ is the density of the fluid. Water ρ = 1000 kg/m

^{3 }

## The Attempt at a Solution

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Since U

_{int}= 4.2T

U

_{in}= (4.2)(300K) = 1260J

U

_{out}= (4.2)(370K) = 1554J

P = ΔU/Δt = (1554J - 1260J) = 294 J/sec

I don't know if this is correct. And I'm not sure how to approach (b), regarding entropy generation.

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