Atmospheric pressure is the weight of air per unit area.Its value varies with altitude.The value of atmospheric pressure at sea level is 1.013 x105 N/m2 The Earth is surrounded by a cover of air called atmosphere. It extends to a few hundred kilometers above sea level. Just as certain sea creatures live at the bottom of ocean, we live at the ...

Read More »## Types of physical quantities

Physical quantities are those quantities which can be measured.Basically there are two types of physical quantities (Base quantities or fundamental quantities) and (Derived quantities). These are quantities that are used to describe the laws of physics. Physical quantities may be divided into six categories. Constant or ratio Such quantities have the only magnitude, for example, refractive index, dielectric constant and ...

Read More »## types of motion in physics with examples and pictures in daily life

What does motion mean? “A body is said to be in motion,if it changes its position with respect to its surroundings.” Surroundings are the places in its neighborhood where various objects are present.The state of rest or motion of a body is relative.For example,a passenger sitting in a moving bus is at rest because he is not changing his position ...

Read More »## Pascal law and its applications

What is Pascal’s Law and how do we use it? An external force applied on the surface of a liquid increases the liquid pressure at the surface of the liquid. This increase in liquid pressure in transmitted equally in all directions and to the walls of the container in which it is filled. This result is called Pascal’s principle which ...

Read More »## Mass of earth and radius in physics

Earth is the third planet of our solar system.Everyone want to learn about the earth.For this I have written a blog post for you in which we will learn about mass of earth. If you want to calculate the mass of the earth,then stay with us for few minutes. Let’s see: How to calculate the mass of earth? Consider a ...

Read More »## Difference between centripetal and centrifugal force with examples

Centripetal force definition “The force which is directed towards the centre of circle is called centripetal force.” Explanation: Consider a body moving with uniform speed in a circular path.In this case velocity changes only in direction and not in magnitude.Applying Newton’s first law of motion we find that some external force must be acting on the particle.Without presence of external ...

Read More »## Find angle between two vectors

The angle between two vectors is referred as a single point, known as the shortest angle by which we have to move around one of the two given vectors towards the position of co directional with another vector.It is found by using the definition of the dot product of two vectors. How to find Angle b/w two vectors? We can find ...

Read More »## Newton’s law of universal gravitation formula

Newton’s law of gravitation can be stated as:”Everybody in the universe attracts every other body with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.” Newton went a step further in his analysis of gravity. In his examination of the orbits of the planets, he ...

Read More »## How to find Vernier caliper least count formula?

Vernier caliper least count formula is calculated by dividing smallest reading of main scale with total number of divisions of vernier scale.LC of vernier caliper is the difference between one smallest reading of main scale and one smallest reading of vernier scale which is 0.1 mm 0r 0.01 cm. Vernier caliper is an instrument used to measure the length, diameter, ...

Read More »## Value of Acceleration due to gravity

Acceleration of a freely falling bodies is called gravitational acceleration or acceleration due to gravity.The value of gravitational acceleration is 10 ms-².Acceleration due do gravity formula is calculated by using Newton’s law of gravitation. Acceleration due to gravity formula Value of acceleration due to gravity is 10 m/second-second which is calculated by using formula given below. Above formula shows that ...

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