A Trough Has Vertical Ends That Are Equilateral Triangles with Sides

question 10

Multiple Choice

A trough has vertical ends that are equilateral triangles with sides of length 2 ft.If the trough is filled with water to a depth of 1 ft,find the force exerted by the water on one end of the trough.Round to one decimal place.(The weight density of water is 62.4 lb/ft³.)

• A) 31.2 lb
• B) 62.4 lb
• C) 12.0 lb
• D) 6.0 lb

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Definitions:

Perceptual Constancy

The ability of the perceptual system to recognize objects as having constant properties (size, shape, color) even when sensory input varies.

Retinal Images

The projections of visual stimuli on the retina, the light-sensitive layer at the back of the eye, which are then processed by the brain to create visual perception.

Gestalt Principles

Theories in psychology that propose humans naturally perceive objects as organized patterns and wholes, rather than their separate components.

Simplicity

The quality or condition of being easy to understand or do, often characterized by clarity, purity, or uncomplicatedness.