Two large diffuse gray parallel plates, separated by a small distance, have surface temperature of 400 K and 300 K. …

Two concentric spheres of diameters D1 = 0.5 m and D2 = 1 m are separated by an air space …

Consider a hot, boiled egg in a spacecraft that is filled with air at atmospheric presssure and temperature at all …

Air at 27°C and 1 atm flows over a flat plate at velocity of 2 m/s. Assume that the plate …

A fluid flowing over a flat plate has the following properties : dynamic viscosity = 25 x 10^-6 kg/ms, specific …

An aluminium sphere weighning 5.5 kg and initially at a temperature of 290°C is suddenly immersed in a fluid at …

A metallic rod (k  = 32 W/m°C), 10 mm in diameter and 80 mm long,  with an insulated end is …

What is the efficciency of a plate fin of length L = 1.5 cm and thickness 2 mm, (if k …

It is required to heat oil to about 500°C for quenching purpose. A ladder is used in the furnace. The …

A fin has 5 mm diameter and 100 mm length. The thermal conductivity of fin material is 400 Wm^-1K^-1. One …