What is SI unit?
What are the advantages of SI unit's?
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Answers
Answer:
In a sound wave, the particles of the medium vibrate in the direction of propagation disturbances or the particle of medium. ... The air particles vibrate parallel to the direction of propagation. Hence a sound wave is called a longitudinal wave.
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☑ Required Answer-
The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system. It is the only system of measurement with an official status in nearly every country in the world.
Volume unit
The SI unit of volume is the cubic meter (m3), which is a derived unit. Liter (L) is a special name for the cubic decimeter (dm3).
Weight unit
The SI unit of weight is the same as that of force: the newton (N) – a derived unit which can also be expressed in SI base units as kg⋅m/s2 (kilograms times metres per second squared).
Density
The SI unit for density is: kilogram per cubic metre (kg/m3)
The greatest advantage of SI is that it has only one unit for each quantity (type of measurement). This means that it is never necessary to convert from one unit to another (within the system) and there are no conversion factors for students to memorize. For example, the one and only SI unit of length is the metre (m).
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