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(a) Using a reasonable time step, determine the temperature of each node with respect to time and plot them in one diagram.

(b) Determine the time needed to reach steady state conditions and determine the steady state temperatures.

(c) Obtain the finite difference formulation of this problem for steady two-dimensional heat transfer,determine the unknown nodal temperatures by solving those equations and compare them to the temperatures determined from part (b), and

(d) Determine the rate of heat transfer from the L- shaped surface by convection in the steady state conditions.

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