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The drag force, D, on a plate moving with a velocity of (40.0 ± 0.2) km/h through air
of density p = ( 1.200 ±0.010) kg/m3, with a surface area of (100.00 ± 0.5mm) x
(30.00 ± 0.05cm) is given by
D = Cd p AV²
where Ca= 2.1 is a non-dimensional constant.
What is the drag force D?
30.00 cm
100.00mm
O D = 9.33 ± 0.233 N
D = 8.9±0.2kg
D =0.89±0.22 N
D = 9.33 ± 2.33 x 101 N
D = 9.3 ± 0.2 N

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