The synchrotron radiation emitted is Polarized. a) True b) False
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The synchrotron radiation emitted is Polarized.
a) True
b) False
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- 3. When light with a wavelength of 223 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.18 x 10-19 J. Determine the wavelength of light that should be used to triple the maximum kinetic energy of the electrons ejected from this surface. nm What is the kinetic energy of the positron if the kineticWhile being X-rayed, a person absorbs 3.9x10-³ J of energy. Part A Determine the number of 40,000-eV X-ray photons absorbed during the exam. n = ——| ΑΣΦ Submit Request Answer www P ?XXIV
- In the figure, the weight of the 20 cm long moving edge of a frame in the vertical plane in a magnetic field of B=0.57 out of the paper plane is W=0.1 N. The total of the frame is R=10 Q. What will be the limit velocity of the released edge? - 20cm a) v = 160 m/s b) V = 100 m/s c) V = 220 m/s d) O v= 55 m/s %3! O 0 00 QO 00 © 0 00 0 0 00Which of the following is true when a wire carrying an electric current is placed in a magnetic field? I. The Lorentz force is greatest when perpendicular to the magnetic field. II. The Lorentz force is at a minimum when parallel to the magnetic field. A. I only B. II only C. Both I and II D. Neither I nor II2. Find the magnitude and direction of the Lorentz force on a current carrying wire in a magnetic field. In both cases, the length of the wire inside the magnetic field is 150 cm. B = 1.5 × 10-3 T B = 8.4 x 10-3T 205° Qi = 12.5 mA 3. Give the direction of the magnetic field and calculate its magnitude at the indicated points near a long straight, current carrying wire? .1 14 cm .1 i = 0.29 A .2 9 cm 25 cm i = 42 mA 22 cm 11 cm 12 T = 1.60 mA