A Solar Heating System Has a 25 $\degree$ C)
A) 14 $\degree$

question 69

Multiple Choice

A solar heating system has a 25.0% conversion efficiency; the solar radiation incident on the panels is 1000 W/m². What is the increase in temperature of 40.0-kg of water in a 1.00-h period by a 4.00 m² area collector? (c_w = 4186 J/kg · $\degree$ C)

• A) 14.3\(\degree\)C
• B) 21.5\(\degree\)C
• C) 28.7\(\degree\)C
• D) 44.3\(\degree\)C

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Definitions:

Operating Income

The profit earned from a company's core business operations, excluding deductions of interest and tax.

Variable Costing

The concept that considers the cost of products manufactured to be composed only of those manufacturing costs that increase or decrease as the volume of production rises or falls (direct materials, direct labor, and variable factory overhead).

Absorption Costing

An accounting method that includes all of the manufacturing costs in the cost of a product, including direct materials, direct labor, and both variable and fixed manufacturing overhead.

Margin of Safety

The difference between actual or projected sales and the break-even sales level, used to assess risk.