Answer:
•2 kilometres.................
As we know that friction force on box is given by

here we know that

here we have
m = 12 kg

so now we have

now we will have


so it required minimum 49 N(approx) force to move the block
This one is also using pre-conventional moral reasoning.
<span>The air sealed between two panes of glass in some windows helps to </span><span>insulate and helps it to keep the warmth or coolness inside.
Hope that helps!
-Chris</span>
Just put a full picture clearly we can’t really see