please explain each

3) 1 nA/ 1000 - a) number: (Unit of measure is Amperes (A).) b) full name of SI prefix and unit of measure c) abbreviation of SI prefix and unit of measure 4) (l mm)/ (l x a) number: (Unit of measure is meters (m).) b) full name of SI prefix and unit of measure c) abbreviation of SI prefix and unit of measure 5) 100 mV / 2 pv- a) number: (Unit of measure is Volts b) full name Of Sl prefix and unit Of measure c) abbreviation of SI prefix and unit of measure