10
10
SI is a base 10 standardized system
No, of 10.
10
They are related to larger and smaller units by powers of ten near the basic unit and by powers of 1000 further away.
The metric, or SI system of measurement is based on units which, in most cases, are related to larger or smaller units by multiples or factors of ten. The exception is time where the factors are 60.
The prefix is used for the name of multiples and submultiples.
http://physics.nist.gov/cuu/Units/units.html
The SI system is based on multiples (and divisions) of ten. There are seven base units, all others are derived from these.
Yes, it can. The units are kg/m3, or related versions.
no; however, femto- is an SI prefix meaning 10-15
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?]