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Author Archives: admin

What is convection current?Definition,examples and applications

Radiation heat transfer conduction heat transfer Convection current definition The upward and downward movement of molecules of water or air is called a convection current. What is Atmospheric Convection? Atmospheric convection plays a fundamental role in determining the global climate patterns and in our daily weather variations.Gliders pilots and condors alike seek the convection thermals that ,rising from the warmer ...

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Newton’s third law of motion with examples in daily life

Newton’s first law of motion Newton’s second law of motion Newton’s third law of motion Newton’s Third law of motion Newton’s third law of motion deals with the reaction of a body when a force acts on it.Let a body A exerts a force on another body B ,the body B reacts against this force and exerts a force on ...

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Newton’s second law of motion:examples and formula

Newton’s first law of motion Newton’s second law of motion Newton’s Third law of motion What is the second law of motion? Newton’s second law of motion deals with situations when a net force is acting on a body.It states that: “When a net force acts on a body,it produces acceleration in the body in the direction of the net force.The ...

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potential energy:Definition,formula and examples

What is potential energy? Potential energy is defined as:“Energy due to position is called potential energy.” When a diver jumps off a high  board into a swimming pool,he hits the water moving pretty fast,with a lot of kinetic energy.Where does that energy come from?The answer is that gravitational force (his weight) does work on the diver as he falls.The diver’s ...

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Gravitational field strength:formula & definition

Gravitation Newton’s law of gravitation Mass of earth What is Gravitational field? “The space around the earth in which earth can exert a force of attraction on other bodies is called gravitational field.”A basic fact of the gravitation is that to particles exerts forces on one another.This is a direct interaction between the two particles and is called action at ...

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Mass of earth:how to calculate mass of earth

Newton’s law of gravitation Gravitation (force of gravity) Gravitational field strength What is the mass of  earth? Consider a body of mass m on the surface of the earth.Let the mass of the earth be  M and radius of the earth be R,The distance of the body from the center of the earth will also be equal to the radius ...

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Newton law of universal gravitation:definition and equation

Newton’s law of gravitation: 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.” Explanation: Consider two bodies of masses m1 and m2 .The distance between the centers of masses ...

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coulomb’s and newton’s gravitational law: differences and similarities

Coulomb’s law Newton’s law of gravitation Comparison of Coulomb’s law and Newton’s law of gravitation The electrical force between two charges is directly proportional to the product of their charges and inversely proportional to the square of the distance between them:It is expressed The gravitational force between two masses is directly proportional to the product of their masses and inversely ...

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Simple pendulum:Definition,derivation and experiment

Simple pendulum definition: A simple pendulum also exhibits SHM. It consists of a small bob of mass ‘m’ suspended from a light string of length ‘L’ fixed at its upper end.In the equilibrium position O,the net force on the bob is zero and the bob is stationary.Now if we bring the bob to extreme position A,the net force is not ...

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difference between fresnel and frounhofer diffraction

what is Fresnel’s diffraction? Fresnel diffraction can be observed if the source of light and the screen at which diffraction pattern is formed are kept at finite distance from the diffracting obstacle.In this situation the wave fronts falling on the obstacle are not plane.Similarly the wave fronts leaving the obstacle are not plane. what is Fraunhofer diffraction? Fraunhofer diffraction can ...

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