A thermometer at aroom temperature is placed in a glass of c

A thermometer at aroom temperature is placed in a glass of cold water.

a.) After the thermometer and water come to thermal equilibrium, how do their temperatures compare?

b.) Does heat flow into the thermometer or out of the thermometer?

c.) Does heat flow into the water or out of the water?

Solution

a)

In Thermal Equilibrium thermometer and water will have equal temperature

b)

Assuming room is warmer than cold water.

So thermometer is warmer than cold water. So for thermometer to attain a lower temperature,heat must flow out of thermometer

c)

Temperature of cold water will increase as it comes into contact with a warmer object to heat flows into the water