Answer to Question #90101 in Mechanics | Relativity for Awesome

Question

An iron ball at 40 degree Celsius is dropped into a bar containing water at 40 degree Celsius. explain how the heat will flow

Answer 1

In the steady state, the density of the energy flux transmitted by heat conduction is proportional to the temperature gradient:

$$\vec{q}=-k\vec{\nabla}T$$

Since the temperatures of the water and the ball are the same, the temperature gradient is zero and the heat flux is also zero. So heat transfer will not occur.