In the scattering of a photon striking an electron at rest, the energy of the incident photon is equal to the energy of scattered photon minus the final kinetic energy of the electron
Indicate whether the statement is true or false
FALSE
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The size of the smallest detail a microscope can resolve is
A. 1/1000 the wavelength of the light used B. Half the wavelength of the light used C. 10 times the wavelength of the light used D. Infinitely small.
What evidence suggests that most of the mass of the Milky Way is in the form of dark matter?
A) The orbital speeds of stars far from the galactic center are surprisingly high. B) Theoretical models of galaxy formation suggest that a galaxy cannot form unless it has at least 10 times as much matter as we see in the Milky Way disk. C) Although dark matter emits no visible light, we have detected its radio emissions. D) Our view of distant galaxies is often obscured by dark blotches, which are presumably made of dark matter.
A point charge Q is placed at the origin. A second charge, 2Q, is placed on the x axis at x = -3.0 m. If Q = 50 mC, what is the magnitude of the electrostatic force on a third point charge, -Q, placed on the y axis at y = +4.0 m?
a. 2.5 N b. 3.0 N c. 3.7 N d. 4.4 N e. 1.8 N
The gap between electrodes in a spark plug is 0.06 cm. In order to produce an electric spark in a gasoline-air mixture, the electric field must reach a value of 3 × 10^6 V/m. What minimum voltage must be supplied by the ignition circuit when starting the car?