The amount of force acting per unit length on the surface of a liquid is called____.

By a surface of a liquid we mean

Centrifugal force acts in

Force per unit length is called …………… .

The amount of air that nmoves into the respiratory passage per minute is called…….

The action and reaction forces acting on

The number of waves contained in a unit length of the medium is called .....

In the section 3.7.3 (Banking of road) we have not included the friction exerted by the road on the car. Suppose the coefficient of static friction between the car tyre and the surface of the road is mu_s , calculate the minimum speed with which the car can take safe turn? When the car takes turn in the banked road, the following three forces act on the car. (1) The gravitational force mg acting downwards (2) The normal force N acting perpendicular to the surface of the road (3) The static frictional force f acting on the car along the surface.

The potential energy of a molecule on the surface of a liquid compared to that of a molecules inside the liquid is ……………. .