In a computer monitor, electrons approach the screen at 1.20 × 108 m/s. What is the de Broglie wavelength of these electrons? Note: the mass of electrons is 9.109 × 10–31
kg; and use the relativistic momentum in your calculation.
The answer is 5.56e-12 m but how?
In a computer monitor, electrons approach the screen at 1.20 × 108 m/s. What is the...
In a typical electron microscope, the momentum of each electron is about 1.9 10-22 kg-m/s. What is the de Broglie wavelength of the electrons? m
A proton has a speed of 7.2x104 m/s. What is the energy of a photon that has the same wavelength as the de Broglie wavelength of this proton? (melectron = 9.11 × 10-31 kg, c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ∙ s)
In a typical electron microscope, the momentum of each electron is about 1.8 x10^-22 kg-m/s. What is the de Broglie wavelength of the electrons?
An electron has a de Broglie wavelength λ = 5.7×10−10 m . h=6.626×10−34J⋅s, e=1.602×10−19C, me=9.109×10−31kg. What is its momentum? What is its speed? What voltage was needed to accelerate it from rest to this speed?
(a) Rank the following particles in order of their de Broglie wavelength, from longest wavelength to shortest wavelength. If any two particles have the same de Broglie wavelength, state this. Explain how you made your ranking. (i) A proton (mass 1.67 ´ 10–27 kg) moving north at 1.0 ´ 103 m/s (ii) A proton (mass 1.67 ´ 10–27 kg) moving west at 2.0 ´ 103 m/s (iii) An electron (mass 9.11 ´ 10–31 kg) moving south at 1.0 ´ 103...
Calculate the de Broglie wavelength of a proton moving at 2.26 ✕ 108 m/s. I got 1.75e-15 and that answer is apparently wrong.
Learning Goal: To understand de Broglie waves and the calculation of wave properties. In 1924, Louis de Broglie postulated that particles such as electrons and protons might exhibit wavelike properties. His thinking was guided by the notion that light has both wave and particle characteristics, so he postulated that particles such as electrons and protons would obey the same wavelength-momentum relation as that obeyed by light: λ=h/p, where λ is the wavelength, p the momentum, and h Planck's constant. Part...
Activity 26-4. Wave aspects of matter and of light [Accompanies Sections 26-3 and 26-4] (a) Rank the following particles in order of their de Broglie wavelength, from longest wavelength to shortest wavelength. If any two particles have the same de Broglie wavelength, state this. Explain how you made your ranking. (i) A proton (mass 1.67 x 10-27 kg) moving north at 1.0 x 10 m/s (ii) A proton (mass 1.67 x 10-27 kg) moving west at 2.0 x 10 m/s...
14. Consider the hydrogen atom. (a) What value of wavelength is associated with the Lyman series for n = 2? (Rydberg constant RH = 1.097 x 10^7 m^-1). (b) An electron in a hydrogen atom makes a transition from the n = 4 to the n = 3 energy state. Determine the energy (in eV) of the emitted photon. (c) Calculate the radius, speed. linear momentum. and de Broglie wavelength of the electron in the first Bohr orbit. (me =...
An electron has a de Broglie wavelength λ = 3.9 10-10 m. (a) What is its momentum? _____ kg·m/s (b) What is its speed? _____ m/s (c) Through what voltage difference does it need to be accelerated to reach this speed? _____ V (d) What's the speed of a 50 kg person having a de Broglie wavelength of λ = 4.4e-38 m? _____ m/s