先赴上連結 http://ppt.cc/lTTY
第六題
N eletrons move at speed v in a circular orbit of radius R. What is the
magnetic dipole moment associated with the current loop?
這題 I= neV然後直接乘上面積 是嗎?
第八題
Yellow light at 587.6nm, characteristic of helium, is found to be redshifted
as it is observed in a certain star; the wavelength is measured to be 611.7 nm
How fast is the star receding form earth?
這題是用光都卜勒的公式然後把頻率換成 光速/波長 就得解了嗎?
還是有其他要注意的地方?
話說 網路上找不太到102台大普物A的解答
有哪位大哥能提供嗎XDD
小弟感激不盡