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Metric System
The metric system is an international basis of measurement based on a decimal system. It uses standard base units to name larger and smaller units.
2,771 Questions
What is the SI unit for the spring scale?
The scale is used to measure weight. Weight is force, specifically, the magnitude
of the gravitational force of attraction between two masses. So the scale can be
marked in any unit of force, such as pounds, newtons, stone, etc. It will read
correctly wherever it's used.
Also, if at the time of manufacture, it is known what planet the scale will be used
on, and the acceleration of gravity on that planet is known, then as long as the
scale is not taken to another planet, every force it measures reveals the mass of
the object being weighed, and it could even be marked in units of mass, such as
kilograms.
Where is the metric system used and why?
Most countries in the world have now converted to using the metric system. This is because it is easier to trade and exchange goods when most people use the same units for measuring size and weight and also because the metric system is decimal (units of 10) rather than involving counting to a mixture of bases (16ozs in a pound 14 pounds in a stone, 12 inches in a foot, 3 feet in a yard....all these are much more difficult to learn.
How much does 9 oz of water weigh in grams?
A gallon of water weighs approximately 9 pounds. There are 128 (fluid) ounces in a gallon. There are 16 ounces in a pound. So, let's do the math. 9 x 16 = 144 ounces in nine pounds in one gallon of water. 144/128 = 1.125 ounces for each fluid ounce of water. 1.125 x 9 = 10.125 ounces. So! Nine fluid ounces of water weighs approximately 10.125 or 10 & 1/8th ounces. Probably not how my math teachers would have preferred I do that, but what can one expect from an English major?
What is the SI unit of measurement for a plastic block?
There is no "unit of measurement for a plastic block". The SI has units of length, area, volume, mass, tensile strength, etc.; please clarify what aspect of the plastic block you want to measure.
What unit did french use before metric system?
The cgs system. That is centimeter-gram-second measurement system.
How many meters in 600 square meters?
None, since there can be no conversion. A metre is a measure of length in 1-dimensional space while a square metre is a measure of area in 2-dimensional space. The two measure different characteristics and, according to the most basic principles of dimensional analysis, any attempt at comparisons or conversions between the two are fundamentally flawed.
How many milliliters are in 3 centimeters?
None, since there can be no conversion. A centimetre is a measure of length in 1-dimensional space while a millilitre is a measure of volume in 3-dimensional space. The two measure different characteristics and, according to the most basic principles of dimensional analysis, any attempt at comparisons or conversions between the two are fundamentally flawed.
m can mean milli or 10-3 and as such is a multiplier not a unit
m = mass (kg) or other is a fundamental and not a derived unit
M = moles is a fundamental unit
m = meter is a fundamental unit and not derived
What are the standard units of length mass volume and temperature in the metric system?
Length: metreMass: kilogram
Volume: litre
temperature: Kelvin.
Why is the metric system of measurement based on multiples of 10?
Metric is based on all units and subunits being multiples of 10. For instance:
1 km = 1,000 m = 100,000 cm = 1,000,000 mm = 1,000,000,000 nm and so on
these same numbers can be expressed in base 10 as follows:
1 km = 103 m = 105 cm = 106 mm = 109 nm where the power varies directly with the units being expressed. For instance, how many km is the Olympic 1500 m? 1.5 km
To solve we convert 1500 m to a base 10 expression of 1.5 x 103 m = 1.5 km
by contrast you cannot easily do the same for the 1 mile run (1600 m) because
1 mile = 5280 feet = 63360 inches which requires knowing the various conversion factors such as 12 inches per foot
other examples include volume
1 L = 103 mL (try to do this easily in gallons and ounces)
and mass 1 metric tonne = 103 kg = 106 g = 109 ug (where u is the Greek symbol mu)
What is the advantage of metric system from English system?
The metric system in universal around the world whereas the customary system is only used in the US. For this reason scientists and mathmeticians all use the metric system because it creates a sort of universal language so there is no translating.
What is the base unit of weight in the metric system?
There are seven base units in the SI - System International, of which Mass is one, and the kilogram is the base unit. (Weight is mass x acceleration.)
At this moment, the unit of mass is referred to a prototype standard kilogram - a physical piece of metal.
It is intended to re-define the unit of mass in terms of the mass of some fundamental particle, and this will be related to mass by the use of Avagadros number, or Planck Constant. Possibly using an ultra-precision sphere of high purity silicon.
How do you know which side of a ruler to use when you are supposed to measure in metric?
One side of the ruler has centimeters and the other side has inches. Centimeters are smaller than inches. The side with more units is the metric side.
Why does almost every country have the metric system?
Because its very very easy to use and learn, its all counted in 10s. 10 mm=1 cm -> 10cm=1 dm -> 10dm= 1 m and alike.
What are the systems of units?
There are many systems. A system is a collection of units which are used together. The two commonest are the SI units, based on the metric system, and imperial units (feet, pounds etc.)
1 foot = 12 inches so 19 feet = 12*19 ... time to get the calculator out!
What is the biggest prefix in the metric system?
They avoid having to use huge numbers, or worse, extended decimals, to indicate quantities. How would you like to have an elephant weighed in at 5,500,000 grams or a human hair with a diameter of 0.000 1 meters?
There are more prefixes than get used, but this is OK; people can use the ones that best "fit" their subjects. For example, the metric for land is the are, which is 10 meters x 10 meters or 100 square meters. Nobody uses it; they prefer the unit closest to the acre, which is the hectare, or 100 are (10,000 square meters).
Choice of prefix can be idiosyncratic; what one person calls 100 millimeters, another could call 10 centimeters, or even 1 decimeter. Personally, I like to remember the sizes of countries in gigare, or billion are, a unit much more convenient (and therefore easier to recall) that 100,000 square kilometers, which is the way geography books give them. Smaller countries can be in megare (million are) and the whole of Planet Earth is 5.1 terare (trillion are).
Does the word metric system mean a measurement based on the number 10?
does international system of units mean a version of the metric system used by modern scientists
1 Joule = 1 Newton*meter = 1 kilogram meter2/second2
Also ... the amount of energy moved when it flows at the rate of 1 watt for 1 second.
Also ... the amount of energy dissipated every second when the voltage across
a section of conductor is equal to the reciprocal of the current through it.
Why is it important for scientists to use the metric syistom?
It is important because metric system goes by the powers of 10, thus have a simple way to convert and take note of its decimals unlike imperial systems where some goes by 12 and so on, introducing more decimals and the level of accuracy is doubtful.
