Question

Using terminology from Chapter 10, explain how a cold water bath could feel warm.

Terms from Chapter 10:

Temperature

Thermal Equilibrium

Zeroth law of thermodynamics

absolute zero

absolute temperature

specific heat capacity

change of phase

latent heat

first law of thermodynamics

internal energy

conduction

thermal conductivity

convection

radiation

* Not all terms have to be used*

Answer 1

Once a person undergoes cold water bath , the body temperature of the person drops and goes below the room temperature through convection due to high thermal conductivity of body. Due to this drop down in temperature the internal energy of the body decreases. As soon as the body comes in contact with surroundings, temperature difference cause transfer of heat from environment to body ( as per zeroth law) . Hence the body's temperature rises via radiation and hence the internal energy of body increase and person starts feeling warm