- #1

- 420

- 0

What is the temperature at the plane where the wood meets the Styrofoam?

so i set up

H=Ak(Tf-T0)/L

H=Ak(Tf-T0)/L

set them both equal so the A drops out

.08(x-20)/.o32=.01(x+12)/.024

and get 26.4 which is wrong, so where am i going wrong at?

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- Thread starter Punkyc7
- Start date

- #1

- 420

- 0

What is the temperature at the plane where the wood meets the Styrofoam?

so i set up

H=Ak(Tf-T0)/L

H=Ak(Tf-T0)/L

set them both equal so the A drops out

.08(x-20)/.o32=.01(x+12)/.024

and get 26.4 which is wrong, so where am i going wrong at?

- #2

PeterO

Homework Helper

- 2,426

- 48

What is the temperature at the plane where the wood meets the Styrofoam?

so i set up

H=Ak(Tf-T0)/L

H=Ak(Tf-T0)/L

set them both equal so the A drops out

.08(x-20)/.o32=.01(x+12)/.024

and get 26.4 which is wrong, so where am i going wrong at?

Your temperature difference on the LHS is wrong way round.

x will be between 20 and -12, so the temp differences should be 20 - T, and T - (-12)

Hopefully that fixes it up.

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