Our subjective feeling of hot and cold depends on the rate at which heat is lost through our skin. in this problem, we will model the skin as a flat layer of fatty tissue (k 0.3 w/m °k) with a thickness of 4 mm, separating an environment with a constant temperature of 37°c (normal body temperature) and the outside air. on a calm winter day with an ambient temperature of 0'°c, the convective heat transfer coefficient between the skin and the ambient air is approximately equal to 20 w/m2 °k. find the heat flux lost through the skin.

q = 2.343 W/m^2

Explanation:

Given data:

Ambient temperature =  0°C

Normal Body temperature = 37 °C

Thermal conductivity of tissue is K 0.3W/m °K

Heat transfer coefficient 20 W/m2 °K

Heat flux can be determined by using following formula

putting all value to get flux value

q = 2.343 W/m^2

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).