Question

What is the difference between mN, Nm and nm ?

Answer 1

1)mN:

mN- milli Newton - smaller SI  unit of Force  which will be equal to thousandth of a newton
 1mN=0.001N

2)Nm:
Nm-- Newton meter
 Newton Meter is the  SI unit of work Done.

3)nm:
nm- nanometer 
1nm=10⁻⁹m

Answer 2

1. mN = micro newron. Micronewton is the unit for measurement of force. A micronewton (µN) is a SI-multiple of the force unit 1newton and equal to one millionth of a newton (0.000,001 N)

2. Nm = Nautical miles.  It is a unit used in measuring distances at sea. It is equal to 1,852 metres which is approximately 2,025 yards.

3. nm = nano meter. It is one thousand-millionth of a metre.