The Amount of Sunshine Illuminating a Wall of a Building

question 93

Multiple Choice

The amount of sunshine illuminating a wall of a building can greatly affect the energy efficiency of the building. The solar radiation striking a vertical wall that faces east is given by the formula where R ₀ is the maximum solar radiation possible, is the angle that the sun makes with the horizontal, and is the direction of the sun in the sky, with = 90 ^o when the sun is in the east and = 0 ^o when the sun is in the south. What percentage of R ₀ is striking the wall when is equal to 60 ^o and the sun is in the southeast?
Round the answer to the nearest integer.

• A)35 %
• B)30 %
• C)20 %
• D)45 %
• E)59 %

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Definitions:

Absorption Costing

A method of inventory costing in which all costs of manufacturing are included in the cost of goods sold, including direct materials, direct labor, and both variable and fixed manufacturing overhead.

Unit Product Cost

The cost assigned to a single unit of product, encompassing all expenses directly and indirectly involved in its production.

Direct Labor Cost

The total cost of all the labor directly involved in the production of goods or services.

Net Operating Income

The income earned from the primary activities of a business, not including expenses from interest and taxes.