Suppose that the temperature at time t at a point on the surface of the earth given
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Question:
Suppose that the temperature at time t at a point on the surface of the earth given by
U(0,t) = 10-7cos 2 pi t - 5 cos 2 pi (365)t.
( here u is measured in 0C and t is measured in years the coefficient are roughly correct for Seattle, Washington ) suppose that the diffusivity coefficient of the earth is K = 0.003 cm2 / sec ~ 9.46 m2/yr.
A, find u(x,t) for x>0
B, at what depth x do the daily variations in temperature become less than 1 unit ? What about the annual variations ?
Related Book For
Fundamentals of Physics
ISBN: 978-0471758013
8th Extended edition
Authors: Jearl Walker, Halliday Resnick
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