Asquare aluminum plate 5 mm thick and 200 mm on a side is heated while vertically suspended in quiescent air at 40ºc. determine the average heat transfer coefficient for the plate when its temperature is 15ºc by using the handout correlations.

Consider a large isothermal enclosure that is maintained at a uniform temperature of 2000 k. calculate the emissive power of the radiation that emerges from a small aperture on the enclosure surface. what is the wavelength ? , below which 10% of the emission is concentrated? what is the wavelength ? 2 above which 10% of the emission is concentrated? determine the wavelength at which maximum spectral emissive power occurs. what is the irradiation incident on a small object placed inside the enclosure?

How to increase the thermal officiency of an ideal simple rankino cycle? among these methods, which one is the best and why?

What is a monomer? how do they form a ploymer from the view point of chemical bonding?