本题目来源于试卷: Vibrations and Waves，类别为 IB物理学
[问答题]
Explain the difference between thkc.se.j9 5 tmve speed of a transverse wave t ptm(e g+vl+5kldv, 9 :xdixd.raveling down a cord and the speed of a tiny + d.xv+k5 9ltdm: vd gl,xepi(piece of the cord.
参考答案:
The
speed of the transverse wave is measuring how fast the wave disturbance moves
along the cord. For a uniform cord, that
speed is constant, and depends on the tension in the cord and the mass density
of the cord. The speed of a tiny piece
of the cord is measuring how fast the piece of cord moves perpendicularly to
the cord, as the disturbance passes by.
That speed is not constant – if a sinusoidal wave is traveling on the
cord, the speed of each piece of the cord will be given by the speed
relationship of a simple harmonic oscillator (Equation 11-9), which depends on
the amplitude of the wave, the frequency of the wave, and the specific time of
observation.
本题详细解析:
暂无
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