Question: 1. Consider the free-convection cooling of a thick, square plate of copper with one surface exposed to air and the other surfaces insulated. Let the air temperature be 25°C and the copper temperature be 45°C. The copper is 10ern on a side. Compare the average heat-transfer coefficients for three exposed face orientations: vertical, inclined 45° to the vertical, and horizontal
2. Consider the wire on a constant-temperature hot-wire anemometer sensor. The wire diameter is 0.00038 cm and its length is 580 diameters. Let the wire temperature be 260°C and the air temperature be 25°C. Compare the heat-transfer coefficients for the wire placed in the horizontal and vertical positions.
Note that the effects of the wire support prongs are neglected.