H.W- A CRT has an effective deflection length of 2 Cm and distance of 1 mm. The acceleration voltage is 2 KV. If the electron mass and charge are 9.1 * 10-31 Kg and 1.6 * 10-19 C. Determine:- 1- The coordinate of the point at which the electron beam leaves the plates? 2- The maximum velocity. 3- The distance of which the screen be placed to produce deflection of 5 Cm on the screen.
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- Atomic Physics attached questionParticle Electron Proton Neutron Relative Charge -1 +1 0 What is: Electric Charge (C) -1.60 x 10-19 +1.60 x 10-19 0 a) The mass defect? Relative Mass (u) 5.485779 x 10-4 1.007276 1.008665 1u = 1.6605 x 10-27 kg 1eV = 1.60 x 10-19 Joules The 'cheating' equivalence shortcut 1u- 931.5 MeV He is the most abundant isotope of helium. Its mass is 6.6447x 10-27kg. Mass (kg) b) The binding energy of the nucleus in joules? 9.109390 x 10-31 1.672623 x 10-27 1.674929 x 10-27the n= tate. vels for Hydrogen. rbed photon? + tion from the thi 4. A light bulb used in a slide projector draws a current of 6 amperes when operating on 120 volts. a. What is the resistance of the light bulbs in ohms? b. What is the power consumed by the light bulb in watts? C. If two identical slide projectors are connected in parallel across the same 120 Volt source, what is the total current drawn from the source?
- 1. A beam of protons, each with kinetic energy of 40 MeV, approaches a potential step of 30 MeV. a) What fraction of the beam is reflected and what fraction is transmitted? b) Does your answer change if the particles are electrons?4. MILLIKAN EXPERIMENT. An oil drop with a mass of 3.1 x10-1$kg absorbs 11 electrons, and then falls through an opening in two parallel, horizontal plates 1.8 cm apart. The upper plate is positive. a) Determine the charge absorbed by the oil drop. b) Determine the required potential difference between the plates in order for the oil drop to be suspended between the two plates.The electronic structure of atoms and molecules may be investigated using photoelectron spectroscopy. An electron in a photoelectron spectrometer is accelerated from rest by a uniform electric field to a speed of 420 km s−1 in 10 µs. Determine the kinetic energy of the electron? a. 8.0 x 10-20 N.m b. 1.6 x 10-25 N.m c. 3.8 x 10-25 N.m d. 4..0 x 10-2 N.m
- B8How much work (in eV) does it take to move 12 protons though a 4V potential difference?Electron + Proton Calculate the potential energy of an electron and proton in a hydrogen atom (use 1 eV = 1.6× 10-¹⁹ J): In Joules: In eV: eV Use that the magnitude charge on an electron and a proton is 1.6×10-1⁹C, the atomic radius is 5.3×10 11m, and k=9 × 10⁹ Nm²/c².
- 17) How many eV's are created when a frequency of 8.77 e 15 is made from a collapsed electron_ f I be-19Q9. Determine the distance between two protons at which the Coulomb potential equals the Coulomb barrier of 200 keV.10. An electron has been placed at the origin. The grid spacing is 1 Angstrom per small square this time. Now you have a nucleus with 18 protons at x = 2.1 Angstroms on the x-axis. How much work would it take to bring in ANOTHER nucleus with 14 protons from 1 m away and place it at y = 8.0 Angstroms on the y-axis? 165.2 eV 413.1 eV -25.2 eV 438.2 eV