2016 AP Physics 2物理Algebra-Based真题系列之Practice Exam简答题免费下载

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2016 AP Physics 2 Algebra-based Practice Exam Free-Response Questions Free Download

2016 AP 物理2模考简答题部分免费下载

此套题仅 Section II含有简答题，

共计时1小时30分钟，共4题

占总分50%

每道大题可能含有不同数量的小题

可以使用计算器

考试时会提供常用的公示表

完整版下载链接见文末

部分真题预览：

4）The picture above appears in a magazine with a caption indicating that the picture represents electron diffraction by atoms in a crystal. The picture was created by directing a beam of electrons through a thin slice of crystal. The article states that a diffraction pattern like the one shown in the picture can be used to determine the distance between atoms in the crystal used in the experiment.

1. In a coherent paragraph-length response, explain how electrons can be used to form a diffraction pattern and how the pattern can be used to determine the spacing of atoms in a crystal. Your answer may include a diagram that supports your explanation of the pattern formation.
2. The article states that x-ray diffraction can also be used to determine crystal spacing. It describes one experiment in which a beam of x-rays with wavelength 8.30nm was used and another experiment in which a beam of 100eV electrons was used.
3. Calculate the energy of a photon in the x-ray beam.
4. Calculate the de Broglie wavelength of an electron in the electron beam.
5. Will directing the x-ray beam at a crystal with atoms spaced 0.6nm apart result in the formation of a diffraction pattern? Will directing the electron beam at the same crystal result in
   the formation of a diffraction pattern? Explain your reasoning in terms of appropriate physics principles.

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