A 0.083 eV neutron beam scatters from an unknown sample and the first intensity peak
is observed at 22∘. What is the spacing of the corresponding Bragg planes?
Ans: ? = 0.507 × 10−10 ?
A 0.083 eV neutron beam scatters from an unknown sample and the first intensity peak is...
A beam of thermal neutrons (K.E. = 0.040 eV) scatters from a crystal with interatomic spacing 0.30 nm. What is the angle of the first-order Bragg peak?
Answer all questions please
5. Consider a particle in the first excited state ofa rigid box of length a. (a) Find the probability density (b) where is the particle most likely to be found? 6. Determine the wavelength of the photon emitted when an electron in a hydrogen atom makes transition from the 5 excited state to the following states (a) ground state (b) 1 excited states (c) 2 excited state Determine whether the emission is visible, uv or infrared...
Problem 1 (Electron Beam Diffraction/De Broglie Wavelength): A beam of 125-eV electrons is scattered from a crystal in an X-ray diffraction experiment, and a first- order peak is observed an angle of 38 from the normal to surface of the crystal. What is the spacing between planes in the diffracting crystal? can you please show steps in solving this problem
10. (8 pt) The light intensity from the reference cell in a dual-beam spectrometer (Po) is 0.50 W/cm2. The light intensity from the sample (P) is 0.025 W/cm. a. What is the transmittance of the sample? b. What is the absorbance of the sample? After opening the instrument, the cover is left open at a crack letting some stray light hit the detector at 0.010 W/cm2 c. What is the apparent absorbance as a result of the stray light?
1. [10 pts] A vertically polarized beam of light with intensity 50 W/mis sent through two polarizing sheets wi polarizing directions at angles , -50° and 02 - 70 with the vertical axis. A. [5 pts] What is the intensity of the light that emerges from the first polarizing sheet? Sig B. 15 pts] What is the intensity of the light that emerges from the second polarizing sheet? (Hint: Be careful with the angle you use here.) ou o F...
A; You are measuring the lattice constant (the distance between planes of atoms) of a sample crystal using X-ray diffraction. The crystal structure is known to be SC or simple cubic. Your X-ray tube produces X-rays with a wavelength of 0.630 nm. You observe the first diffraction peak at an angle of 28.5°. What is the lattice constant of the crystal? _____??? B: Suppose that at least 21.5 eV is needed to free an electron from a particular element, i.e.,...
A battery with V = 9.0 volts is connected to two identical but unknown capacitors as in the figure. The charge drawn up from the battery to completely charge up the initially uncharged capacitors was 99 micro C. What is the capacitance of each capacitor C? Question options: 4.4 micro F 11 micro F 5.5 micro F 22 micro F 2.2 micro F Question Protons move clockwise around a circular path of radius 27 cm in a magnetic field of...
Please show how you get the final answer, with work and
formulas. Please , solve b to e. Thank you!
1. You collect the following sample of size 10 from a process of unknown distribution, and you are asked to find the best estimate you can for the true mean u of the distribution according to what you know about point estimation. 56.1 53.5 72.8 65.9 66.4 44.8 76.0 63.761.2 56.6 a.) First, someone tells us the underlying distribution is...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
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someone help me find this information?
Pre-Laboratory Exercise: Plastics Identification I. List four properties that you will use in lab to determine the identity of the polymer samples 2. Describe the density test. What observation will help you determine the density of each polymer? What precautions should be taken in placing the sample in the solutions? 3. Write the name and abbreviation for the six recyclable polymers 2 huetn deisity polyetayene.HDpz poulene: PP 4. Given the list of wavenumber...