In a photoelectric-effect experiment it is observed that no current flows unless the wavelength is less than 530 nm.Part AWhat is the work function of this material?Express your answer using three significant figures.W₁ = 2.35 eVSubmit✓ CorrectPart BPrevious AnswersWhat stopping voltage is required if light of wavelength 430 nm is used?Express your answer to three significant figures and include the appropriate units.Submit Previous Answers Request AnswerX Incorrect; Try Again; 9 attempts remainingProvide Feedback

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a. X ray are produced in a tube operating at 20.0 kV strikes a target and Compton- scattered through an angle of 90.0° What is the wavelength shift, AA. b. A beam of protons with have the same energy scatters from atoms that have a spacing of 0.150 nm in the crystal. The m- 2 intensity maximum occurs when the angle is 30.0°. Calculate the kinetic energy (in eV) of each beam.
Electrons with a speed of 1.4×106 m/sm/s pass through a double-slit apparatus. Interference fringes are detected with a fringe spacing of 2.4 mmmm . Part A What will the fringe spacing be if the electrons are replaced by neutrons with the same speed? Express your answer in micrometers. ΔynΔyn = 1.30•10−6 μmμm SubmitPrevious AnswersRequest Answer Incorrect; Try Again; 4 attempts remaining Part B What speed must neutrons have to produce interference fringes with a fringe spacing of 2.4 mmmm ? Express your answer in meters per second.
An electron is in the ground state of a square well of width L = 4.00 x 10-10 m. The depth of the well is six times the ground-state energy of an electron in an infinite well of the same width. Part A What is the kinetic energy of this electron after it has absorbed a photon of wavelength 79 nm and moved away from the well? Express your answer in electron volts. K = ΜΕ ΑΣΦ Submit Request Answer ? eV
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Magnesium has a work function of 3.7 eV. A.) What is the longest wavelength of light that will release an electron from a magnesium surface?
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What is the energy range (in joules and eV) of photons in the visible spectrum, of wavelength 410 nm to 740 nm ? Express your answers using two significant figures. Enter your answers numerically separated by a comma. ΜΕ ΑΣΦ Emin, Emax = Submit Request Answer Part B ? J Express your answers using two significant figures. Enter your answers numerically separated by a comma. Emin, Emax = Η ΑΣΦ ? eV Submit Request Answer