Answer:
a) Thermal conductivity of skin: 
b) Temperature of interface: 
Heat flux through skin: 
Explanation:
a)

Where:
is thermal conductivity of a material,
is heat flux through a material,
is the thickness of the material,
is the temperature on the first side and
is the temperature on the second side




b)



The heat flux between both surfaces is constant, assuming the temperature is maintained at each surface.









Answer:
False
Explanation:
In electric heater electric energy is converted into heat energy. In heater wires are present which have resistance and current is flow in heater when we connect the heater to supply.
And we know that whenever current is flow in any resistance then heat is produced so in electric heaters electric energy is converted into heat energy
So this is a false statement
I think the answer would be A if its wrong I’m sorry
Answer: nutrients
Explanation: to help the cells have energy