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Author Archives: admin

Velocity:definition,formula,examples in physics

What is velocity in physics? Velocity is defined as:”The rate of displacement of a body is called its velocity.”The velocity tells us not only the speed of a body but also the direction along which the body is moving.Velocity of a body is a vector quantity.It is equal to the displacement of a body in unit time. What is the ...

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Speed:Definition,formula,examples and problems

Speed Velocity Acceleration What is speed in physics? “The distance covered by an object in unit time is called its speed”.In other words ,the rate at which object is moving is called speed.Unit time may be a second,an hour,a day or a year.It tells us how fast or slow an object is moving .Its formula is given as: Here S ...

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List of types of renewable energy sources & examples

Renewable energy sources list Energy from tides Energy from waves energy from sun energy from biomass energy from waste products Geothermal energy Solar energy Wind energy Heat energy light energy what are Renewable energy resources? “Renewable energy sources are those energy sources that can be regenerated quickly.”There are many sources of energy such as coal,oil and natural gas.These fuels are ...

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different forms of energy and their sources with pictures and examples

  “Energy is the ability of a body to do work.”It is  present everywhere in sunlight,water,wind,plants,animals etc..It is required for walking, reading and playing.Energy does makes things for us like makes toast,plays music etc..A good source of energy would be the one which would: Do a large amount of work per unit volume or mass. Be easily be accessible Be ...

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different forms of kinetic energy with examples

kinetic energy definition physics kinetic energy  possessed by a body due to it`s motion . It is the energy of motion . Examples of kinetic energy when you are walking or running your body is exhibiting kinetic energy . A bicycle or skateboard in motion possesses kinetic energy .Running water has kinetic energy and it is used to run water ...

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Different types of motion in physics with examples and pictures

Newton’s laws of motion Newton’s second law of motion Newton’s third law of motion Simple harmonic motion (SHM) Projectile motion equations 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 ...

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Second law of thermodynamics:Statement,equation,examples and applications

State the Second law of thermodynamics First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about the conditions under which this conversion takes place. The second law is concerned with the circumstances in which heat can be converted into work and direction of flow of heat. Before initiating ...

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Internal energy formula physics and examples

what is internal energy? “The sum of all forms of molecular energies (kinetic and potential ) of a substance is termed as its internal energy.”In the study of thermodynamics,usually ideal gas is considered as a working substance. the molecules of an ideal gas are mere mass points which exert no force on one another. so the internal energy of an ...

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Difference between evaporation and boiling with examples

Evaporation and boiling If you are moping the floor in home you will observe that the wet floor or surface of floor becomes dry very early after a while.We can say that thin layer of water on floor surface has evaporated.Evaporation is the change the change of state of liquid into vapours. Evaporation is different from boiling besides this in ...

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Thermal radiation heat transfer:definition and examples

Conduction of heat convection of heat Radiation heat transfer What is radiation? “Radiation is the mode of transfer of heat from one place to another in the form of waves called electromagnetic waves.” Our sun is the major source of heat energy.But how does this heat energy reach the earth?It reaches us neither by conduction nor by convection,because the space ...

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