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April 19, 2014

Homework Help: physics

Posted by serena on Tuesday, November 23, 2010 at 10:20pm.

We confirm the concept of the geothermal effect in an alternative fashion to the discussion in the text. We know that the average rate at which heat is conducted through the surface of the ground in North America is 54.0 mJ/(s m2). Assuming a surface temperature of -2 oC, what is the temperature at a depth of 29.86 km? Hint: Ignore the heat generated by the presence of radioactive elements and use 2.5 J/(m s K) for the average thermal conductivity of the near-surface rocks. Start with Fourier's law.
What process would I use to answer this?

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