1. If Davisson and Germer had used 100 V to accelerate electron beam. a) b) Find the wavelength of the electron For first-order diffraction, calculate the angle between the original direction of the...
Problem 1 (Electron Beam Diffraction/De Broglie Wavelength): A beam of 125-eV electrons is scattered from a crystal in an X-ray diffraction experiment, and a first- order peak is observed an angle of 38 from the normal to surface of the crystal. What is the spacing between planes in the diffracting crystal? can you please show steps in solving this problem
Find wavelength of electron accelerated by a) 100 V, b) 100 KeV c) 100 GeV
1. Light of wavelength 640 nm is incident on two slits separated by 0.880 mm. An interference pattern is observed on a screen 2.20 m away. a) Using the small angle approximation (tan θ sinθ), find the distance between the central maximum and the first bright fringe. b) What percent of error is made in locating of the seventh-order bright fringe if the small angle approximation is used compared to using the exact trigonometric function? c) How does the...
(b) at" 30.9218m? e-1318.5 , Graded Hw#1 An airplane flying at v-100 ft/s at an angle of 10° drops a package at t-0. Assume that the horizontal wind creates a constant resistance of 2 ft/s2 to the package in the x direction. The gravity is 32.2 ft/s (a) An automated laser gun in the same 2D plane is tracking the package. If at the instant the laser gun an= 9.292 ? records r-200'and ? 60°, determine t'è.H, and ? at...
5.0. Protons with kinetic enerigy of 50 MeV are moving in the positive x direction and enter a magnetic B (0.5 T)k directed out of the plane of thepage ure extending from - 0 to -1 m as shown in 29.36. (a) Calculate the y compo nent of the protons momentum as they leave the magnetic field at m. (b) Find the angle a between the initial veloc- ity vector of the proton beam and the velocity vec tor after...
KURSVLOEBEUR Question 4 [20 marks] (a) What particular aspect of the Rayleigh-Jeans Law, the classical theory of blackbody radiation, caused it to fail to explain the blackbody radiation spectrum? (b) What aspect of the Boltzmann probability distribution used in formulating Planck's Law of blackbody radiation allows it to avoid the problem that caused the classical model to "crash and burn" i.e. not match experiment? (c) In a low energy electron diffraction (LEED) experiment, 62 eV electrons are scattered from the...
11. Four identical 1 mF capacitors are connected together electrically. What is the least possible capacitance of the combination? a. I mF b. 1/8 m c. 4 mF d. 1/4 mF 12. Q. has 50 electric field lines radiating outward and Q, has 100 field lines converging inward. What is the ratio Q./0,? a. 2 b. -2 'c. 1/2 d. -1/2 16. A uniform 45-T magnetic field passes through the plane of a wire loop 0.10 min area. What flux...
Need by 12 pm July 30, 2020 with answers shown and explanation. Thank you. R 1) Two resistors are connected to each other in parallel, one resistor has a known value of R, the resistance of the second one is unknown. If the equivalent of two resistors in parallel is equal to what is the resistance of the second one? A) R B) 2R E) 4R 2) Which one of the following sentences is correct about the velocity selector? A)...
1 A repelling force must occur between two charged objects under which conditions? a. charges are of unlike signs b. charges are of like signs c. charges are of equal magnitude d.charges are of unequal magnitude 2 Two point charges are 4 cm apart. They are moved to a new separation of 2 cm. By what factor does the electric force between them change? a.2 b. 1/2 c.4 d. 1/4 3. By mapping the equipotential lines, you can draw a. the charge b. the electric field...
Problem 1 The following table summarizes the results for all values of d. for a converging lens Case Type Direction Magnification S< do < 26 Real Inverted Enlarged d -2/ Real Inverted Same size de > 27 Real Inverted Reduced d. Virtual Upright Enlarged Sketch and find the image for each case shown in the table by changing the objects position Problem 2 0.25 p 0.23 P AI (b) Graded index (GRIN) rod lens is a glass rod whose refractive...