Is a spoon is held over fire,it becomes hot after sometimes hot after sometime.Describe the process of heating up.

Why does aluminium vessel lose its lusture after sometime?

Why electrochemical cell stops working after sometimes ?

Why a fan continues to rotate for sometime even after it is switched off ?

A cold steel spoon is dipped in a cup of hot milk. It transfer heat to its other end by the process of __________.

Fill in the blanks :- A cold steel spoon is dipped in a cup of hot milk. It transfers heat to its other end by the process of __________.

The flow rate of water from a tap of diameter 1.25 cm is 0.48 L//min . The coefficient of viscosity of water is 10^(-3) Pa-s. After sometime, the flow rate is increased to 3L//min . Characterise the flow for both the flow rates.