A glass window pane 1 m by 1 m is 25 mm thick. If the show outside maintains the outer surface at `0^@ C` and the heat of the room maintains the inner surface at `6^@ C` ,Thermal conductivity of glass in S.I unit is 0.2, how much heat will be conducted through the glass in 1 day ?

A pond is covered by a sheet of ice 2.0 cm thick (thermal conductivity 1.6 jm^(-1)s^(-1)k^(-1) . The temperature of the lower surface of ice is 0^@ C and that of the upper surface is -10^@ C . At what rate is heat conducted through each square meter of the ice ? What is the direction of this flow of energy ?

Total area of glass - planes of the window in a room is 10 m^2 and thickness is 2mm .Temperature outside and inside of the room are respectively 5^@ C and 20^@C . What is the amount of heat in calories flowing out of windows of the room per minute ? K for glass - 0.84 in mks system

A point charge causes an electric flux of -3.1xx10^(4)" N-m"^(2)//C to pass through a spherical Gaussian surface. If the radius of the Gaussian surface is doubled, how much flux would pass through the surface ?

A liquid rises to a height 7.0 cm in capillary of radius 0.1mm. If the density of density of liquid is 0.8 X 10^3 kg/ m^3 and the liquid wets the glass , find the surface tension of liquid .

State the relationship amongst cell constant of a cell resistance of the solution in the cell and conductivity of the solution. How is molar conductivity of the solution is related to conductivity of its solution ? A voltaic cell is set up at 25^(@)C with the following half cells Al//Al^(3+) (0.001 M) and Ni//Ni^(2+)(0.50M) Calculate the cell voltage. [(E_(Ni^(2+)//Ni)^(@)= -0.25V","),(E_(Al^(3+)//Al)^(@)= -1.66V),(E_("Cell")^(@)=1.4602V)]

Metal slab is made up of two parallel side plates of metal A and metal B of thickness 0.6 cm and 0.4 cm respectively. Their respective thermal conductivities are 2.268 and 1.008 SI unit. The outer surface of the plate A is at 220^@ and that of plate B at 20^@ . Find the temperature of the interface .

An external field of 1000 Volt /m maintains a current density of 0.1 Amp/m^2 . Calculate (a) the resistivity (b) the conductivity.