Water is flowing in a drainage channel of rectangular cross-section.The width of the channel is 15 m,the depth of water is 8.0 m,and the speed of the flow is 2.5 m/s.What is the mass flow rate of the water? The density of water is 1000 kg/m³. A)2.0 × 10⁵ kg/s B)2.0 × 10³ kg/s C)3.0 × 10⁵ kg/s D)3.0 × 10³ kg/s E)3.0 × 10² kg/s

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Quizplus · Accepted Answer

The mass flow rate is calculated by multiplying the cross-sectional area of the channel, the flow speed, and the density of water. The area is 15 m * 8 m = 120 m². The flow rate is 120 m² * 2.5 m/s = 300 m³/s. The mass flow rate is 300 m³/s * 1000 kg/m³ = 3.0 × 10⁵ kg/s.

Water Is Flowing in a Drainage Channel of Rectangular Cross-Section