The coefficient of absorption and coefficient of reflection of a thin uniform plate are 0.75 and 0.20, respectively. If 200 K cal of heat is incident on the surface of the plate, find the quantity of heat transmitted.

The coefficient of absorption and reflection of thin uniform plate are 0.75 and 0.20, respectively. If 200 kcal of heat is incident on the surface of plate, find the quantity of heat transmitted.

The coefficient of absorption and reflection on the surface of the thin plate are 0.74 and 0.22, respectively. If 184 calories of radiant heat is incident on the surface of the plate, find the quantities of heat absorbed, reflected, and transmitted.

The coefficient of absorption and reflection of the surface of a body are 0. 75 and 0.20 respectively. If 200 calorie of radiant heat is incident on the surface of the body, then the beat absorbed is

The coefficients of reflection and transmission of the surface of a thin plate are 0.22 and 0.04 respectively. If 250 calories of radiant heat is incident on the surface of the plate, how much heat is absorted by the surface?

The coefficient of absorption of heat surface of a body is 0.68. When 100 calories of heat is incident on the body, 27 calories are reflected from the surface. Find the coefficient of transmission of the body.

The coefficient of static and dynamic friction between a body and the surface are 0.75 and 0.5 respectively. A force is applied to the body to make it just slide with a constant acceleration which is

The coefficient of absorption of a surface is 0.6. When radiant energy is incident on the surface at 1500 J//min , the energy reflected in 5 minutes is 450 J. Find the coefficient of reflection and transmission of the surface.

A 100 watt filament loses all its power by radiation when it is heated to a temperature of 2500 K. If the diameter of the filament is 0.2 mm and the surface emissivity of the filament is 0.5, find the length of the filament. (Stefan's constant sigma = 5.67 xx10^-8 W/m^2k^4 )

Heat energy is incident on the surface at the rate of 1000 J/min. If coefficient of absorption is 0.8 and coefficient of reflection is 0.1 then heat energy transmitted by the surface in 5 minute is

The coefficients of thermal conductivity of copper, mercury and glass are respectively K_c, K_m and K_g such that K_c > K_m> K_g . If the same quantity of heat is to flow per second per unit area of each and corresponding temperature gradients are (T_g)_c, (T_g)_m and (T_g)_g then