Represent μm⋅Mg in the correct SI form using an appropriate prefix. a) Mm⋅kg, b) km⋅kg, c) m⋅kg, d) μm⋅kg, e) mm⋅kg? Can somebody explain why the answer is d.

Answer 1

(b) 1μm-Mg * 1km/10^9μm * 1Mg/10^3kg = 10^-12 km-kg
and so on