Question

State the Newton's law of cooling. what do you mean by capillarity. deduce the expression for rise of liquid level in capillary

Answer 1

Answer:

According to Newton law of cooling

The rate of change of the temperature is directly proportional to its own temperature n ambient temperature..

Capillarity is a physical phenomenon in which liquids flow without the help of gravity. ... The surface tension of the liquid be S. Weight of liquid column acting downwards = m g. W = ρ (πD²/4) h g --(1) The surface on the top liquid inside the capillary tube has a trough (cup) like shape.

Answer 2

Answer:

hey mate here is your answer

1. Newton's Law of Cooling states that the rate of change of the temperature of an object is proportional to the difference between its own temperature and the ambient temperature (i.e. the temperature of its surroundings).
2. the tendency of a liquid in a capillary tube or absorbent material to rise and fall as a result of surface tension

thank you