Physics Spl

In terms of mechanical properties of fluids, pressure is the force applied per unit area of the liquids. The pressure in a fluid is given mathematically by P = F/A
Here P is pressure, A is the area, and F is the perpendicular force. 
In fluids, at a given depth, pressure acts equally in all directions. The pressure of the fluid increases with depth as the weight of the fluid above also increases. In a fluid of density? under gravity g at a depth h is given by P = h? g. The pressure of the fluid is expressed in pascals (Pa) in SI units and it is measured using pressure gauges or devices like manometers.

Students can download the Classification of metal conductors & semiconductor notes provided by the Shiksha experts through this article.

We can classify the metal, conductor, and semiconductor based on their ability of electrical conductivity. Metals are good conductors with a high electrical conductivity, while semiconductor lies between conductors and insulators. Moreover, insulators have low electrical conductivity

Semiconductor is a material that can act as a conductor or an insulator based on its properties. There are two types of semiconductors: Intrinsic and Extrinsic semiconductors.

According to the law of conservation of momentum, the total momentum of an isolated system before and after an event remains constant if no external force acts on it. The event can be a collision. Momentum is the product of an object's velocity and mass. For example, in the case of a collision between two cars, if there are no external forces such as an external push or friction applied, the momentum before and after the collision will remain constant.

According to the class 11 physics laws of motion, static friction is stronger than kinetic friction. It is the frictional force that resists the motion initiation between two objects. The largest static friction is proportional to the normal force. When two objects are already in motion relative to each other, the frictional force acting between two objects is called kinetic friction. It depends on the nature of the surfaces in contact and it is generally less than static friction. In everyday motion, both types of friction play significant roles.

Momentum has both magnitude and direction and it is a vector quantity. The direction of the momentum is the same as the direction of the velocity. It quantifies the "quantity of motion" of an object and reflects how fast it is moving and how much mass the object has, the standard SI unit for momentum is kilogram-meters per second (kg m/s). A heavier object moving a the same velocity as the lighter object will have greater momentum. Also, an object moving at a higher velocity will have higher momentum than the same object moving at a lower velocity.