Question

17. The principle that shows that electromagnetic waves can be produced by Oscillating charges or currents was first hypothesized by which radiation pioneer? A. Bohr B. Maxwell C. Einstein D. Plank 18. The number of in an atom determines its chemical elemental properties (what chemical element it is). A protons B. electrons C. neutrons D. bosons 19 has the same number of nucleons (same mass number) but a different number of protons and neutrons 20. The describes the situation when an incident photon interacts with the electrons of an atom such that the electron is emitted from the atom and the photon is scattered at a lesser energy. A. Photoclectric effect B. Positron Annihilation C. Pair production D. Compton scattering 21. is the velocity of all electromagnetic radiation in a vacuum as a constant velocity for all radiation wave types including light, gamma emissions and X-ray waves. A. 8 x 10 m/s B.2 x 10 m/s C. 3 x 10 m/s D.4 x 10 m/s 22. When an incident photon of greater than 1.02 MeV in energy interacts with the coulomb field of an atom such that the photon is converted to matter in the form of an electron and a positron this process is termed 23. Radio waves, light, and X-rays are all examples of energy A. Nuclear B. Thermal C. Electrical D. Electromagnetic

Answer 1

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