Two adjacent compressor discs (surfaces 1 and 2) each of 0.4 m diameter are bounded at the periphery by a 0.1 m wide shroud (surface 3). given that f12 = 0.6, calculate all the other view factors for this configuration. [5 marks]
surface 2 surface 3
surface 1
(b) the initial temperature distribution across a wall with a thickness of 0.3 m is described with the following function:
cape201001
(b) the spectral emissivity of the outer surface at 1000 k is such that at
wavelengths between 0 and 5 μm the emissivity (ε) is 0.3; between 5 and 8 μm, ε is 0.8 and from 8 μm to ∞, ε is 0.2. determine the average emissivity of th

the correct answer is a

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.