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33. What is the energy of a photon of orange light with a frequency f = 5.0 x 10¹4Hz? A) E = 2.21 x 10¹⁹J B) E = 3.31 x 10¹⁹J D) E = 2.21 x 10-¹⁹ E = 3.31 x 10-1⁹ E) C) E = 4.41 x 10¹⁹J F) E = 4.41 x 10-1⁹J 34. The atomic theory of matter A) is over 2000 years old; Democritus proposed the existence of atoms in about 350 BC. B) is one of Einstein's great achievements from his best year, 1905. C) is relatively new, originating with Werner Heisenberg in the 1920s. D) revolutionized physics when Bohr proposed the quantum atom in the 1950s. 35. When Democritus proposed the atomic theory of matter, he suggested that A) the weight ratio of hydrogen to oxygen in water was always 1:8. B) the four fundamental elements were earth, air, fire, and water. Anything could be made by mixing these four substances in various ratios and combinations. C) atoms were tiny, spherical particles of matter too small to be seen. These atoms could not be split into smaller pieces. D) the compound Pb = peanut butter was composed of equal parts peanuts and butter.