What is the thickness of the air layer

Reference no: EM13236586

Animals in cold climates often depend on two layers of insulation: a layer of body fat (of thermal conductivity 0.200W/(m?K) ) surrounded by a layer of air trapped inside fur or down. We can model a black bear as a sphere 1.50m in diameter having a layer of fat 4.00×10?2m thick, as shown in the figure.(Figure 1) In studies of bear hibernation, it was found that the outer surface layer of the fur is at TC = 2.70?C during hibernation, while the inner surface of the fat layer is at TH = 31.0?C. How thick should the air layer (contained within the fur) be so that the bear loses heat at a rate of 50.0W ? Thermal conductivity of air is kair = 2.40×10?2W/(m?K) .

What is the thickness of the air layer (contained within the fur), Lair?

Reference no: EM13236586

Questions Cloud

What would be the minimum market share to reach the mes : Imagine a manufacturing industry that produces 100 million units of compact digital cameras annually in the US market. Suppose the minimum efficient scale (MES) for the production of digital cameras is 10 million units annually.

What is the electric flux through one of the faces : A charge of 16.8 ?C is at the geometric center of a cube, What is the electric flux through one of the faces

Theatre productions or films produced in the current century : EXAMINE the theatre productions or films produced in the current (21st century) or previous century (20th century) in a country/culture outside the United States and EXPLAIN how the political situation affects the theatrical art being created in that..

Significant difference in how the drugs perform : Is there any statistically significant difference in how the drugs perform? If so, explain the effect. Use the post hoc tests as needed and write up the results using APA style and interpret them.

What is the thickness of the air layer : Animals in cold climates often depend on two layers of insulation: a layer of body fat surrounded by a layer of air trapped inside fur or down, What is the thickness of the air layer

What is the cournot equilibrium quantity and profits : The soft drink industry is a duopoly with differentiated products. Two firms, Coca-cola and Pepsi, compete through Cournot quantity-setting competition. Denote the quantity that Coca-cola and Pepsi produce by Q1 and Q2, respectively.

Elizabethan theatre-those used in bejing opera are similar : Explain how the stage furnishings used in the Elizabethan theatre and those used in the Bejing opera are similar.

Based on the status and rights of women in ancient greece : Based on the status and rights of women in ancient Greece, Rome, Babylon, Persia, Assyria, and Phoenicia. How would you describe the position of women in the ancient world? How did their opportunities vary from place to place? Since this is a conv..

Explain expression for the partition function for a molecule : Derive an expression for the partition function for a molecule with two states separated by energy hν (i.e. ε1 = 0 and ε2 = hν). If we consider a canonical ensemble of N such molecules, derive expressions for the total internal energy and the heat..

User Account

All Pages