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Answer:
see below
Explanation:
Question 1)
57kg to ug
[tex]126\:Kg(\frac{1*10^{9}ug }{1kg} )\\\\=126(10^{9} )\\\\=126,000,000,000 ug[/tex] (there are 9 zeros)
Question 2)
126lbs to N
[tex]126lbs(\frac{4.45N}{1lb} )\\\\=126(4.45N)\\\\=506.7N[/tex]