The SI units are rational, coherent, universal and more simple than the older systems.
Its easy to compare
It's much easier to convert units in the SI system.Don't look now, but the SI system is the "everyday" systemin virtually the whole world outside the USA.
The correct answer doesn't appear in the list of choices.Each of those three quantities CAN be describes in SI units.
You can convert measurements made using other units into the equivalent SI units.
There are 7 base SI units and all other are defined using these 7 base units. See the related question below:[http://wiki.answers.com/Q/What_are_all_the_SI_unitsWhat are all SI units?]
In SI units, that would be the Newton.In SI units, that would be the Newton.In SI units, that would be the Newton.In SI units, that would be the Newton.
Its easy to compare
Any advantage, only confusions and errors.The SI is strongly recommended.
dall can be
density can be measured using SI units. These are grams per centimetre cubic, also written as g/cm3
It's much easier to convert units in the SI system.Don't look now, but the SI system is the "everyday" systemin virtually the whole world outside the USA.
There are 7 base SI units and all other are defined using these 7 base units. See the related question below:[http://wiki.answers.com/Q/What_are_all_the_SI_unitsWhat are all SI units?]
If you have different units, converting to any common unit will help. Of course, using standard units, i.e. SI units, is better than any other arbitrary unit. Also, SI units for a consistent set of units; as a result, you can often omit proportionality factors from formulae.
The correct answer doesn't appear in the list of choices.Each of those three quantities CAN be describes in SI units.
You can convert measurements made using other units into the equivalent SI units.
There are 7 base SI units and all other are defined using these 7 base units. See the related question below:[http://wiki.answers.com/Q/What_are_all_the_SI_unitsWhat are all SI units?]
The SI unit for force is the Newton.
The main advantage is that if you stick to SI units, the formulas are simpler, without having to multiply/divide with strange constants. Joule = Newton x meter Watt = joule / second This is simpler than using calories for energy, since a calorie is 4.184 joules