A ceramic has a flat, circular bottom surface with a diameter of 40 cm and thickness of 1 cm. Heat is transferred steadily to boiling water in the pan through its bottom at a rate of 187 W. The inner surface of the pan is 100oC and surrounding air temperature is 10oC. Use tables 2-3 and 2-4 in your textbook for unknown heat transfer properties.
Determine the temperature of the outer surface of the bottom of the pan.

Asolid cylinder is concentric with a straight pipe. the cylinder is 0.5 m long and has an outside diameter of 8 cm. the pipe has an inside diameter of 8.5 cm. the annulus between the cylinder ad the pipe contains stationary oil. the oil has a specific gravity of 0.92 and a kinematic viscosity of 5.57 x 10-4 m2/s. most nearly, what is the force needed to move the cylinder along the pipe at a constant velocity of 1 m/s?