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physics kiddy
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Why are pure numbers like 1 , 2 , 3 ... dimensionless and Avogadro's Number, Plank's Constant, Gravitational Constant dimensional ?
aati2sh said:Because mv^2 has the unit same as that of Energy.
Dimensionless quantities are numerical values that do not have any physical dimensions. They are used to represent ratios, proportions, and other mathematical relationships between physical quantities.
Dimensionless quantities are important in science because they allow us to compare and analyze different physical phenomena without the influence of units. They also help in simplifying complex equations and making them more generalizable.
Dimensionless quantities are calculated by dividing two physical quantities with the same dimensions. The resulting value will be dimensionless, representing the relationship between the two quantities.
Dimensionless quantities play a crucial role in dimensional analysis as they allow us to identify and eliminate redundant terms in equations. This helps in reducing the complexity of equations and making them more applicable to different situations.
No, dimensionless quantities do not have units as they represent pure numbers. They are also known as unitless quantities or quantities of dimension one.