[題目] 波動題目(題目看不太懂)
[領域]
波動
[來源]
原文書
[題目]
The period of pulsating variable star may be estimated by considering
the star to be executing radial longitudinal pulsations in the
fundamental standing wave mode;that is, the star's radius varies
periodically with time, with a displacement antinode at the star's
surface.
(a) Would you expect the center of the star to be a displacement node or
antinode?
(b) By analogy with a pipe with one open end, show that the period of
pulsation T is given by T=4R/v, where R is the equilibrium radius of
the star and vis average sound speed in the material of the star.
(c) Typical white dwarf stars are composed of material with a bulk
modulus of 1.33x10^22 Pa and a density of 10^10 kg/m^3. They have
radii equal to 9x10^-3 solar radius. What is the approximate pulsation
period of a white dwarf?
[瓶頸]
題目看不太懂
這題是在說
1個星星它發出的波接近於
1開1閉的管子所能產生的波嗎?
不知道是不是
麻煩高手幫忙一下
謝謝!!
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※ 編輯: ggyy940 來自: 203.67.197.124 (01/04 18:00)