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please answer this question and please show the work necasary thanks.

1-9. Convert: (a) 200 lb. ft to N.m, (b) 350 lb/ft3 to kN/m”, (c) 8 ft/h to mm/s. Express the result to three significant fig
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Answer #1

a 200 lb. Et to Nam [ilbift = 1.356 N.m/ 20016 ft = 200x1356 N.m = 271:2 nim 350 e61f23 to kN/m3 [ 1 lb / 143 _ 0.157 kN/m 3

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