In an annealing process—a process wherein materials such as glass and metal are heated t...

In an annealing process—a process wherein materials such as glass and metal are heated to high temperatures and then cooled slowly to toughen them—the following equation may be used to determine the temperature of a thin piece of material after some time t.

Those of you who will pursue aerospace, chemical, mechanical, or materials engineering will learn about the underlying concepts that lead to the solution in your heat-transfer class. What is the appropriate unit for h if the preceding equation is to be homogeneous in units? Show all steps of your work.