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21) Why do heavy nuclei contain more neutrons than protons? A) Neutrons dilute the electric repulsion of the protons. B) Neutrons are lighter than protons. C) Neutrons are heavier than protons. D) Neutrons are radioactive, and so are heavy nuclei. 22) Modern nuclear bomb tests have created an extra high level of 14C in our.
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Situation 23.2 A bichromatic source produces light having wavelengths in vacuum of 450 nm and 650 nm.  The indices of refraction are 1.440 and 1.420, respectively. 41) In Situation 23.2, a ray of the bichromatic light, in air, is incident upon the oil at an angle of incidence of 50.0°. The angle.
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  Short Answer Questions   1) Light of wavelength 519 nm passes through two slits. In the interference pattern on a screen 4.6 m away, adjacent bright fringes are separated by 4.0 mm. What is the separation of the two slits? 2) Light is incident perpendicularly from air onto a liquid film that is.
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Multiple Choice Questions   1) Alpha particles (charge = +2e, mass = 6.68 × 10-27 kg) are accelerated in a cyclotron to a final orbit radius of 0.30 m. The magnetic field in the cyclotron is 0.80 T. The period of circular motion of the alpha particles is closest to: A) 0.16 μs B).
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Multiple Choice Questions   1) Two radio antennas are 130 m apart on a north-south line. The two antennas radiate in phase at a frequency of 3.6 MHz. All radio measurements are made far from the antennas. The smallest angle, reckoned east of north from the antennas, at which constructive interference of.
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  Short Answer Questions   1) A sinusoidal electromagnetic wave is propagating in vacuum. (a)At a given point and at a particular time the electric field is in the +x direction and the magnetic field is in the -y direction. What is the direction of propagation of the wave? (b) At the above point the.
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Multiple Choice Questions   1) An alternating current is supplied to an electronic component with a rating that it be used only for voltages below 16 V. What is the highest Vrms that can be supplied to this component while staying below the voltage limit? A) 8 V B) 16 V C) 256 V D) 8.
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Multiple Choice Questions   Situation 29.1 An atom has completely filled inner shells and a single valence electron in an excited p state. The filled inner shells have an orbital momentum equal to zero. 1) In Situation 29.1, the magnitude of the orbital angular momentum of the atom is closest to: A) 1.0 B) 1.2.
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Multiple Choice Questions   1) In a head-on collision, an alpha particle (Z = 2) of energy 8.20 MeV bounces straight back from a nucleus of charge 80.0 e. How close were the centers of the objects at closest approach? A) 2.81 × 10-14 m B) 3.39 × 10-12 m C) 6.56 × 10-15 m D).
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Situation 30.1 An excited nucleus undergoes fission into two fragments. →     +  The following atomic masses are known: 91.926270 amu 143.922845 amu 236.045563 amu 41) In Situation 30.1, the reaction energy, in MeV, is closest to: A) 150 B) 160 C) 170 D) 180 E) 190 42) In Situation 30.1, assume, at a given instant, that the two.
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21) Which statement about thin lenses is correct? In each case, we are considering only a single lens. A) A converging lens always produces a real inverted image. B) A diverging lens always produces a virtual inverted image. C) A converging lens sometimes produces a real erect image. D) A diverging lens always produces.
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  Short Answer Questions   1)A photoelectric surface has a work function of 2.10 eV. Calculate the maximum kinetic energy, in eV, of electrons ejected from this surface by electromagnetic radiation of wavelength 356 nm. 2)(Note: h = 6.63 x 10-34 J ? s, e = 1.60 × 10-19 C, and c =.
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Multiple Choice Questions   1) Two fixed navigation beacons mark the approach lane to a star. The beacons are in line with the star and are 40 Mm apart. A spaceship approaches the star with a relative velocity of 0.30 c and passes the beacons. The passage of the ship between the.
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  Short Answer Questions   Figure 21.25 1) In Figure 21.25, a uniform magnetic field B is confined to a cylindrical volume of radius 0.05 m. B is directed into the plane of the paper and is increasing at a constant rate of ΔB/Δt = 0.900 T/s. Calculate the magnitude and direction of the.
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Multiple Choice Questions   1) A 7.55 × 1014 Hz electromagnetic wave propagates in carbon tetrachloride with a speed of 2.05 × 108 m/s. The wavelength of the wave in carbon tetrachloride is closest to: A) 272 nm B) 301 nm C) 338 nm D) 361 nm E) 397 nm 2) A 1.90 × 1014 Hz electromagnetic wave.
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Situation 25.3 The angular magnification of a refracting telescope is 40. When the object and final image are both at infinity, the distance between the eyepiece and the objective is 143.5 cm. The telescope is used to view a distant radio tower. The real image of the tower, formed by the.
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