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What is a fundamental measurement that is defined by a readily reproducible reference standard?
base quantity !!
Why does a beam balance measure mass?
Beam balance measure mass by comparing unknown quantity with known standard quantity of mass.Beam balance measure accurate quantity of matter present in that body .Quantity measured by beam balance doesn't differ in any place of world either in poles or equator but measuring scale quantity differ in different places
What is meant by unit of a physical quantity?
the seven basic physical quantities ;lenght, mass,time temperature,electric currrent ,luminous intensity and amount ofsubstance which areindependent of any other quantities for their measurement are clled
What is the need for measurement of physical quantity?
We come across many things in our daily life that we need to measure. To go to the market in a rickshaw or a taxi we must know its approximate distance from our house. Only then would we have an idea of the expected fare. Similarly, to buy a cloth for our clothes, we should know the approximate length of cloth required. In certain cases we need to know exact values. For example, when we have to buy a pair of shoes, we require the exact size, or when we go to the tailor also requires the exact measurements. Any quantity that we study in physics is known as a physical quantity. Measurement of a physical quantity means comparing it with a known standard quantity. Each accepted standard quantity is a standard of measurement. It is called a unit.The measurement of a particular quantity is the same at all places and at all times. For this purpose, scientists have introduced some standard units for making physical measurements. The standard unit of a physical quantity should have the following characteristics.Fistly it is of a convinient size and secondly Its value dies not change with respect to place or time. A measurement consists of two parts-the magnitude and the units. For example, the length of a cloth is 5 meters. It means that 5 is the magnitude and meter is the standard unit. The study of physics involves measurement of various types. This is why physics is called the science of measurement. To make measurement more scientific, convenient and uniform, in 1791 the French Academy of Science devised the metric system based on the decimal system. In October 1990, the 11th General Conference of Weight and Measures adopted an international system of units known as the SI system of units.
What is a scaler quantity?
It is a "scalar quantity", it refers to a quantity that has magnitude but no direction, as distinct from a vector quantity
The difference between actual and standard cost caused by the difference between the actual quantity and the standard quantity is called the?
The difference between actual quantity and standard quantity is called the material quantity variance.
What is a standard unit needed to measure a quantity correctly?
To measure a physical quantity correctly and need to compare it with some standard quantities. Thus a standard unit is needed to measure a quantity correctly.
What is the exact quantity that people agree to use for comparison?
A "standard". In manufacturing, it may be refered to as a "master" when used to calibrate instruments that measure size, but it is still a standard.
What do you call the process of comparing an unknown quantity to a standard known quantity?
It is calibrating.
What does the term nisab means in zakat?
A: shari'at has fixed a certain quantity or standard of valuables on possession of which zakat becomes fard. Zakat becomes fard when one owns valuables in that quantity or standard. This standard or quantity is called nisab .
Comparison between an unknown quantity and a standard?
A comparison between an unknown quantity and a standard is known formally as a measurement. In essence, by taking a measurement of a standard against an unknown quantity, you are creating your own system of measurement.
What is meant by unit of physical quantity?
A standard use for a measurement of a physical quantity is called the unit of that physical quantity
What is a quantity adopted as a standard of measurement?
Unit
What is a fixed quantity for comparison that starts with an s?
standard
Standard costs are used to measure?
price and quantity variance
To what statistical quantity does the term sigma refer?
standard deviation
An exact quantity that people agree to use for comparison is a?
A Standard.
