Concept explainers
To calculate: Heat loss through a window with area
Answer to Problem 3P
Heat loss through a window with area
Explanation of Solution
Given information:
The following variation:
The heat loss through a glass window varies jointly as the area of the window and the difference between the inside and the outside temperatures.
When
Calculation:
Let Q be the heat loss through the window, A be the area of the window and t be the temperature difference. Then, Q varies jointly as A and t that is,
where k is a constant.
Substituting
Therefore, an equation of the joint variation is
To find Q when
Chapter 8 Solutions
Algebra and Trigonometry: Structure and Method, Book 2
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