Water at 20°C flows between 80-cm-wide horizontal parallel plates 12 mm apart such that a pressure drop of 100 Pa occurs over a distance of 2 m. If the top plate is moving at 1.8 m/s in the direction of the flow, the flow rate is nearest:
Physics & Space Science
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Weight and g: From what height above the surface of the earth should an object be dropped to initially experience an acceleration of 0.54g? (G = 6.67 × 10-11 N ? m2/kg2, Mearth = 5.97 × 1024 kg, Rearth = 6.38 × 106 m)
A. 2300 km B. 1700 km C. 5400 km D. 2900 km
Physics & Space Science
Early human culture, involving villages and a sense of history, could best be described as a(n)
A) industrial culture. B) migratory culture. C) hunting culture. D) scientific culture. E) agri-culture.
Physics & Space Science
To the nearest percent, what fraction of an iceberg is submerged? (?ice = 917 kg/m3, ?sea = 1.03 × 10^3 kg/m3.)
a. 95% b. 93% c. 91% d. 89% e. 77%
Physics & Space Science
Color is a reliable physical property to use for mineral identification
TRUE FALSE
Physics & Space Science