Question

Assume that the radioactive elements in the crust are uniformly distributed (i.e. H=constant). The surface heat flux is −70 mW/m2 ˆj (where ˆj is a unit vector pointing into the surface), and there is no heat flux into the bottom of the crust. Furthermore, k = 4 W/(m · K), T s = 0◦ C, and the temperature at the base of the crust is 1200◦ C. Assuming a steadystate, what is the thickness of the crust? (Your answer should be a number and NOT involve H).

need it in 10 mins

Answer 1