the basic metric unit of mass?

Answer 1

As Keith said, the base unit for mass in the International System of Units (SI) is the kilogram. It's the only one of the 7 base units that's still defined in terms of an actual physical object - the "international prototype of the kilogram", which is an actual piece of 90%Pt-10%Ir alloy kept in a special vault at the Bureau International des Poids et Measures outside of Paris.

The other base units are:

Length = meter = the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second

Time = second = the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the 133-Cs atom

Electrical current = ampere = the constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed 1 m apart in vacuum, would produce between these conductors a force equal to 2 x 10^–7 newton per metre of length

Temperature = kelvin = the fraction 1/273.16 of the thermodynamic temperature of the triple point of water

Amount of substance = mole = the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12

Luminous intensity = candela = the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 10^12 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian

Answer 2

Mass Measurement



The measure of mass in the metric system has several units that scientists use most often.

The kilogram is the standard unit of mass in the metric or SI system. The Kilogram(Kg) is roughly analogous to the English pound. It takes approximately 2.12 pounds to equal one Kilogram.

A smaller mass unit analogous to the English ounce is the gram. The gram represents approx. 30 dry ounces in mass. Other metric mass units include:


the centigram (cg)

milligram(mg)

microgram (µg)

nanogram(ng).

Hope this helps.
Jennifer

Answer 3

It's the killogram, which is the mass of a litre of water. I'm not sure why it isn't the gram, everything seems a factor of 10^3 off!

Answer 4

Well the SI unit is kilogram.

Answer 5

Okay, wild guess: The gram?

Answer 6

gram

Answer 7

what he said