beam of electrons is accelerated across a potential of 14.40 kV before passing through two slits. The electrons form an interference pattern on a screen 5.00 m in front of the slits. The first-order maximum is 9.00 mm from the central maximum. What is the distance between the slits?

The work function of a certain metal is found to be 1.82 eV. What is the stopping potential required to to stop the current in a photoelectric effect experiment if the wavelength of the incident light is 413 nm. Round your answer to 3 significant figures. Add your answer

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 confined to a one-dimensional region in which its ground-state (n = 1) energy is 1.45 eV. (a) What is the length L of the region? nm(b) What energy input is required to promote the electron to its first excited state? eV

Two small slits are cut 0.1 mm apart in a small piece of metal. Many electrons are fired at the slits with a speed of 300 m/s. A detector is placed 7 m away on the other side of the slits. Part A What is the smallest distance from the central maximum that the detector will not see any electrons? --ΑΣΦ • ? Submit Previous Answers Request Answer * Incorrect; Try Again; 6 attempts remaining Part B If we repeat the experiment with protons instead protons? - ΑΣΦ ^ Submit Request Answer < Return to Assignment Provide Feedback cm electrons, what is the smallest distance from the central maximum that the detector will not see any ? um

Molybdenum has a work function of 4.20 eV. What is the stopping potential if the incident light has a wavelength of 180 nm?

Electrons with an energy of 0.842 eV are incident on a double slit in which the two slits are separated by 40.0 nm. What is the de Broglie wavelength (in nanometers!) of these electrons?

The work function of a certain metal is found to be 1.82 ev. What is the stopping potential required to to stop the current in a photoelectric effect experiment if the wavelength of the incident light is 452 nm. Round your answer to 3 significant figures. Add your answer

X-rays of wavelength 0.0628 nm are scattered from a crystal with a grazing angle of 11.3°. Assume m = 1 for this process. Calculate the spacing between the crystal planes. d = nm

Learning Goal: To understand how to find the wavelength and diffraction patterns of electrons. An electron beam is incident on a single slit of width a. The electron beam was generated using a potential difference of magnitude V. After passing through the slit, the diffracted electrons are collected on a screen that is a distance L away from the slit. Assume that Vis small enough so that the electrons are nonrelativistic. Ultimately, you will find the width of the central maximum for the diffraction pattern. Part B What is the wavelength of the electron beam? Use the de Broglie relation and the momentum that you found in Part A. Express your answer in terms of h, me, e, and V. X = [5] ΑΣΦ Submit Request Answer ?