Find the temperature difference between two sides of a steel plate 4 cm thick, when heat is transmitted through the plate at the rate of 400 kcal per minute per square metre at steady rate. Thermal conductivity of steel is 0.026 `kcal//m.s. k`.

The thermal conductivity of steel is 0.026 k cal//ms K. Find the temperature diference between two sides of a steel plate 4 cm thick, when heat is transmitted through the plate at the rate of 400 k cal per minute per squar metre of steady state.

The temperature difference between two sides of an iron plate, 2 cm thick, is 10^@ C . Heat is transmitted through the plate at the rate of 600 kcal per minute per square metre at steady state. Find the thermal conductivity of iron.

The difference in temperature between two sides of a glass plate 0.3 mm thick is 25^@C . If the area of one side surface is 10 m^2 , calculate the heat conducted per second through the plate. The thermal conductivity of glass is 0.84 J//s m K.

Calculate the rate of loss of heat through a glass window of area 1000 cm2 and thickness of 4 mm, when temperature inside is 27^@ C and outside is -5^@ C . Coefficient of thermal conductivity of glass is 0.022 cal/ s cm^@ C.

The thermal conductivity of a metal plate is 80 w//mk . If the thickness of the plate is 0.5 cm and heat is conducted at the rate of 2.5 xx 10^6 W//M^2 . The temperature difference across the two faces of the plate is about

Three rods of copper, brass and steel are welded together to form a Y-shaped structure. Area of cross-section of each rod =4cm^2 . End of copper rod is maintained at 100^@C whereas ends of brass and steel are kept at O^@C . Lengths of the copper, brass and steel rods are 46, 13 and 12 cm respectively. The rods are thermally insulated from surroundings except at ends. Thermal conductivities of copper, brass and steel are 0.92, 0.26 and 0.12 CGS units respectively. Rate of heat flow through copper rod is

A deep rectangular pond of surface area A, containing water ( density =p, specific heat capacity =s ) is located in a region where the outside air temperature is at a steady value of 26^@C . The thickness of the frozen ice layer in this pond, at a certain instant is x. Taking the thermal conductivity of ice as K, and is specific latent heat of fusion as L, the rate of increase of the thickness of ice layer, at this instant, would be given by

An electric field of 3 X 10^4 Vm^-1 is produced between the plates 0.05m apart, of a parallel plate capacitor when it is fully charged. Now an uncharged metal plate of thickness 0.01m is inserted between capacitor plates:- Find the potential difference after introduction of plates.

An electric field of 3X10^4 Vm^-1 is produced between the plates 0.05m apart, of a parallel plate capacitor when it is fully charged. Now an uncharged metal plate of thickness 0.01m is inserted between capacitor plates:-What would be the potential difference if a dielectric slab (k = 3) were introduced in place of metal plate

A lead bullet strikes a target with velocity of 480 m/s . If the bullet falls dead , then the rise in temperature of bullet is , (Assuming that heat produced is equally shared between the bullet and target. ) ?( J= 4.2 xx 10^3 J/kcal, C = 0.03 Kcal/kg^@K )