Calculate the heat loss from a double-pane glass window consisting of two pieces of glass, each having a thickness of 10 mm with a thermal conductivity of k = 1.3 = >·? . The two glass panes are separated by an air gap of 7 mm. Assume the thermal conductivity of air to be k = 0.022 = >·? . Also, express the total R- and U-values.
What will be an ideal response?
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Differentiate between a resource and a reserve. Provide an example of the economic importance of this difference
When populations increase toward their carrying capacity, their resources ________
A) are not a concern as they are usually infinite in supply B) increase in supply as the population size decreases to zero C) become more scarce D) increase because populations are decreasing
Hot spots have active volcanoes above them on Earth's surface and moving plates carry the volcanoes away from their hot-spot source.
Answer the following statement true (T) or false (F)
Human population will continue to grow until it either crashes due to the depletion of resources or stabilizes at a sustainable carrying capacity.
a. true b. false