An electrically heated plate dissipates by convection at a rate of 8000 W/m 2 into the ambient air at 25°C. If the surface of the hot plate is at 125°C, calculate the heat transfer coefficient for...

An electrically heated plate dissipates by convection at a rate of 8000 W/m²
into the ambient air at 25°C. If the surface of the hot plate is at 125°C, calculate the heat transfer coefficient for convention between the plate and air.

How does the thermal conductivity of liquids and gases vary with temperature ?