A 0.393-nm photon collides with a stationary electron. After the collision, the electron moves forward and the photon recoils backwards. (a) Find the momentum of the electron. kg m/s (b) Find the kinetic energy of the electron. eV
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- An electron and a 0.0380-kg bullet each have a velocity of magnitude 510 m/s, accurate to within 0.0100%. Within what lower limit could we determine the position of each object along the direction of the velocity? electron mm bullet mA photon of wavelength 200 nm is scattered by an electron that is initially at rest. Which one of the following statements concerning the wavelength of the scattered photon is true? Question 25 options: The wavelength is zero nm. The wavelength is greater than 200 nm. The wavelength is 200 nm. The wavelength is less than 200 nm, The wavelength is less than 100 nm but greater than zero.You set up a photoelectric experiment with an unknown metal to eject electrons. You use light of wavelength λ = 670 nm, which just BARELY ejects electrons from the metal. Planck□s constant is either h = 6.63 x 10-34 J-s or h = 4.14 x 10-15 ev.s. a) What is the binding energy of the unknown metal in eV? ev b) You change the light source to one with a wavelength of λ = 310 nm. Using the binding energy you found in the previous step, find the maximum kinetic energy of an electron that is ejected from the metal in Joules. J c) What is the stopping voltage for an electron with the kinetic energy you just found? V
- 7. The X-rays detected at a scattering angle of 0 = 65° in the figure have a wavelength of 1.90 nm. What is the kinetic energy of the recoil electron. Recoil Electron electron at rest Incident X-ray photon Scattered X-ray photon 19 0of19 oof19 oofig oof19 0of19 oof19 0of19 0 of19 0of19A 100-W sodium-vapor lamp emits yellow light of wavelength 590 nm. Calculate the number of photons emitted per second.A certain X-ray machine generates X-rays from a beam of electrons accelerated from zero to 99.9999999 per cent the speed of light in a long linear accelerator of length 3.2 km. The electrons are generated in pulses of duration ∆t = 100 fs. The generated x-rays from the target are also short pulses (λ = 0.15 nm). Determine the energy of a single x-ray photon in the beam. a.) 8.27 eV b.) 8.27 J c.) 8.27 keV d.) none of these.