Monday, December 22, 2014

Express temperature as a function of height, using linear model?The ground temperature is 20 degrees C. The temperature of 10 degrees C is at a...

Given:


Temperature at ground level, that is when height is 0 (h0) meters


= t0 = 20 degrees centigrade


Temperature at height 1 km (h) meters


= t = 10 degrees centigrade


It is assumed that the temperature drops in proportion to increase in height.


This can be expressed in the form of equation as follows:


t = t0 - C*(h - h0)   ...   (1)


Where C is a constant.


Substituting values of t0, t h0 and h in equation (1) we get:


10 = 20 - C*(1 - 0) = 20 - C


Therefore:


C = 20 - 10 = 10


Substituting value of C, t0, and h0 in equation (1) we get:


t = 20 - 10*(h - 0) = 20 - 10h


Therefore temperature can be expressed as a function of height by the equation:


Temperature in degrees centigrade = 20 - 10*(Height in km)

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