What was the most critical supporting software for COBOL on IBM mainframes? What is the kinetic energy of an electron with de broglie wavelength 0.3 NM? Particles that exhibit both wave and particle properties are said to have wave-particle duality. :) abhi178 abhi178 Relation between momentum and Kinetic energy is P = , here m is mass of object, P is linear momentum of object and K.E kinetic energy of that object. Note that for very large masses – meaning something on the scale of everyday objects, like a baseball or a car – this wavelength becomes vanishingly small. Is it too late for me to get into competitive chess? reply from potential PhD advisor? Please explain your work. m_electron = 9.1e-31kg. site design / logo © 2020 Stack Exchange Inc; user contributions licensed under cc by-sa. Amy Dusto is a high school science teacher and a freelance writer. Why do I need to turn my crankshaft after installing a timing belt? The problem is that for an electron $\nu \ne c/\lambda$. 3 Answers. Thank You. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy. This natural phenomenon was first observed in electromagnetic radiation, or light, which can be described as either an electromagnetic wave or a particle known as the photon. Why does accessing record name fail in this scenario? How does linux retain control of the CPU on a single-core machine? Can flint be obtained from gravel that a player placed when it is mined? Favorite Answer. Lv 5. De Broglie Wavelength Formula is used to calculate the wavelength and momentum in any given problems based on this concept. Is Elastigirl's body shape her natural shape, or did she choose it? Solution: Given: Velocity of the electron, v =2 ×10 6 ms-1. For example, in a double-slit experiment, the resulting patterns of wave interference show light's wave nature. The presence of oxygen atoms on the surface results in auger electrons with a kinetic energy of approximately 505 eV. Therefore E=f(v,l), Using partial derivatives, the change in energy, dE is expressed through the following equation. Which formula for the de Broglie wavelength of an electron is correct? Question 1: Find the wavelength of an electron moving with a speed of  ms-1. Michael . To learn more, see our tips on writing great answers. However you can get an approximate equation for the energy and wavelength by noting that the de Broglie wavelength is given by: $$ \lambda = \frac{h}{p} $$ For a non relativistic electron we have: Physics Stack Exchange is a question and answer site for active researchers, academics and students of physics. The de Broglie hypothesis is the idea that matter (anything with mass) can also exhibit wavelike properties. 8.09e-17J = (1/2)(9.1e-31kg)v^2. She holds a Bachelor of Arts in Natural Sciences area and a Master of Arts in Science Writing from Johns Hopkins University. Then, because massive particles do not travel at the speed of light, replacing c with the velocity of the particle v: Next replacing f with v/λ (from the wave speed equation, where λ [lambda] is wavelength), and simplifying: Finally, because momentum p is equal to mass m times velocity v: This is known as the de Broglie equation. Your email address will not be published. KE = 505 eV = 8.09e-17J. Your email address will not be published. Asking for help, clarification, or responding to other answers. Should we leave technical astronomy questions to Astronomy SE? v = 13334331.46 m/s. Did genesis say the sky is made of water? The kinetic energy is given as 1 eV. Planck’s Constant, h = 6.62607015×10−34 Js, The de-Broglie wavelength is given by λ = h/mv. 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MathJax reference. where λ is wavelength in meters (m), h is Planck's constant in joule-seconds (6.63 × 10-34 Js) and p is momentum in kilogram-meters per second (kgm/s). Is there a formal name for a "wrong question"?

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