Water Is Flowing in a Drainage Channel of Rectangular Cross-Section $1000 \mathrm {~kg} / \mathrm { m } ^ { 3 }$

question 61

Multiple Choice

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 $1000 \mathrm {~kg} / \mathrm { m } ^ { 3 }$

• A) \(3.0 \times 10 ^ { 2 } \mathrm {~kg} / \mathrm { s }\)
• B) \(2.0 \times 10 ^ { 5 } \mathrm {~kg} / \mathrm { s }\)
• C) \(2.0 \times 10 ^ { 3 } \mathrm {~kg} / \mathrm { s }\)
• D) \(3.0 \times 10 ^ { 3 } \mathrm {~kg} / \mathrm { s }\)
• E) \(3.0 \times 10 ^ { 5 } \mathrm {~kg} / \mathrm { s }\)

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Definitions:

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A mental health disorder characterized by excessive, persistent, and unrealistic worry about everyday things, affecting a person’s daily functioning.

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An intense fear or anxiety of being judged, negatively evaluated, or rejected in a social or performance situation, also known as social anxiety disorder.

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A form of psychotherapy that focuses on identifying and challenging negative thought patterns and beliefs to alter unwanted behavior patterns and emotions.

Anxiety Disorders

A group of mental disorders characterized by significant feelings of anxiety and fear, impacting an individual's daily functioning.