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Dimensional analysis physics examples and practice problems

Dimensional analysis in physics All the physical quantities can be expressed in terms of seven fundamental quantities.The powers to which these fundamental physical quantities be raised are termed as “dimensions”.Using the method of dimensions called dimensional analysis. Each base quantity is considered a dimension expressed by specific symbol written within square brackets.It stands for qualitative nature of physical quantity.For example ...

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Difference between dot product and cross product in tabular form

Difference between dot product and cross product   Dot product or scalar product  Cross product or vector product If the product of two vectors is a scalar quantity,the product is called scalar product or dot product. If the product of two vectors is a vector quantity then the product is called vector product or cross product. The dot product is ...

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dot product and cross product of vectors in physics with examples

dot product of two vectors When two vectors are multiplied with each other and answer is a scalar quantity then such a product is called scalar product or dot product of vectors. A dot (.) is placed between vectors which are multiplied with each other that’s why it is also called “dot product”. Scalar = vector .vector Vector dot product ...

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Difference between conservative and non conservative forces with examples

Conservative force definition The force which allows the opportunity of two way conversion among potential and kinetic energies is said to be conservative force. Conservative forces examples Gravitational forces Magnetic force Electrostatic force Elastic spring force Electric force Non conservative force definition The force is called non conservative if work is done by the force is dependent on path followed ...

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Artificial gravity physics with formula and applications

What is artificial gravity? Weightlessness in space crafts or satellites is highly is highly convenient to an astronaut in many ways.For Example he can not drink in it.It is very difficult for him to perform experiments. In order to overcome these difficulties an artificial gravity is created in the space craft by spinning it around its own axis so that ...

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Relation between power force and velocity in physics

How is power related to force and velocity? It is some time convenient to express power in terms of constant force (F) acting on an object moving at constant velocity “V” . For example when the propeller of motor boat causes the water to exert constant force on the boat,it moves with constant velocity v .The power delivered by motor ...

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Power equation physics:definition,unit dimension and problems

Power definition The rate of doing work is called power. From the statement of work it is not clear that same amount of work done in one second or in 1 hour.The rate at which work done is often interest in practical applications. Power formula physics Average power formula The ratio of total work to the total time is called ...

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First equation of motion in physics

First equation of motion derivation Consider a body is moving with initial velocity “Vi” with uniform acceleration “a” as shown in figure.After time “t” its velocity becomes “Vf”.The total distance covered by a body is under the straight line AB which is shaded as shown in figure.The slope of line AB is acceleration “a”.1st equation of motion can be obtained ...

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micrometer screw gauge measurement with least count formula

What is the micrometer screw gauge? It is an instrument used to measure diameter of thin wires, thickness of small sheets of glass,plastic etc. It can measure upto 1/10 of mr (or 0.01 mm= 0.001 cm) which is usually called the least count of screw gauge. Parts of micrometer screw gauge It consists of a U-shaped metal frame F with ...

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Vernier calliper measurement least count formula

What is the vernier calliper? It is an instrument used to measure the length,diameter,radius etc. It can measure up to 1/10 of mm (or 0.1 mm 0.01 cm) which is called least count of Vernier Callipers. Scales of vernier calliper Vernier scale Main scale Main scale is graduated is centimeter while Vernier scale slides along the main scale and is ...

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