Body's surface tissue as layer of thickness X1=5 cm which has a thermal conductivity K1= o.59 J/m. s.C .

This is surrounded by a layer of tissues fat of thickness X2=2 cm

with K2=0.21 J/m. s.0C .The body's interior is at temperature T1=37C

and the skin temperature is T2=33.5C

.What is the heat loss per unit area?

The necleus of an atom is made up of what subatomic particles?

Asheet of steel 1.5 mm thick has nitrogen atmospheres on both sides at 1200oc and is permitted to achieve a steady-state diffusion condition. the diffusion coefficient for nitrogen in steel at this temperature is 6 x 10- 11 m2 /s, and the diffusion flux is found to be 1.2 x 10-7 kg/m2 -s. also, it is known that the concentration of nitrogen in the steel at the high-pressure surface is 4 kg/m3 . how far into the sheet from this high-pressure side will the concentration be 2.0 kg/m3 ? assume a linear concentration profile.

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current