Chapter #12 Solutions - Physical Science with Modern Applications - Melvin Merken - 5th Edition

 

1. Discuss the basis for a claim that there is gold on the sun. Get solution

2. Calculate the wavelength of the second line of the Balmer series for hydrogen. Get solution

3. Calculate the wavelength of the third line of the Paschen series for hydrogen. Get solution

4. A photon is emitted from a hydrogen atom that undergoes a transition from the n = 4 state to the n = 2 state. Calculate the wavelength of the emitted photon. Get solution

5. Why does the “fingerprint” of an atom have more than one characteristic frequency of light? Get solution

6. Why was the Balmer series detected before the Lyman series? Get solution

7. Does a neon sign emit light of a continuous spectrum or only a few discrete wavelengths? Explain. Get solution

8. What do the lines in the spectrum of an atom represent? Get solution

9. How did Bohr’s model of the atom account for the Balmer and other spectral series of the hydrogen atom? Get solution

10. Compare radioactivity and X-rays. Get solution

11. What was the experimental basis of Rutherford’s concept of a nuclear atom? Get solution

12. Although hydrogen has but a single electron, the complete hydrogen spectrum consists of numerous lines. How do you account for this? Get solution

13. Discuss two instances in which classical electromagnetic theory failed to account for the experimental observations. Get solution

14. In what way are quanta of radiation a return to the corpuscular theory of light? Get solution

15. In the photoelectric effect, the energy of a photoelectron is less than that of the incident photon. Explain. Get solution

16. Yellow light can induce the photoelectric effect in a certain metal, but orange fight cannot. Would blue fight? Explain. Get solution

17. The human eye is most sensitive to light of approximately 5500 Å in wavelength. What is the energy in joules of such a photon? Get solution

18. Which photon has the greater energy—infrared or ultraviolet? Get solution

19. How does the frequency of an X-ray photon that is scattered by an electron compare with the frequency of the incident photon? Get solution

20. If the frequency of a photon is doubled, how is its energy affected? Get solution

21. If the wavelength of a photon is doubled, what happens to its energy? Get solution

22. Explain why ultraviolet light causes sunburn, but visible light does not. Get solution

23. Which colors of the visible spectrum have photons of higher energy? Get solution

24. Why was the Compton effect considered important for verifying Einstein’s idea of light quanta? Get solution

25. How did de Broglie’s hypothesis help to explain the stability of the atom? Get solution

26. What is the de Broglie wavelength of a 0.500-kilo-gram football traveling at 15.0 m/s? Get solution

27. Calculate the de Broglie wavelength associated with the earth, if its mass is 6.00 × 1024 kilograms and it revolves around the sun with a velocity of 3.00 × 104 m/s. Get solution

28. How is the wave-particle duality related to the concept of symmetry in nature? Get solution

29. Discuss the meaning of the dual nature of radiation and matter. Get solution

30. Account for the considerably greater detail seen in a bacterial specimen revealed by an electron microscope as compared with the same specimen revealed by a light microscope. Get solution

31. Is light a wave or a particle? Explain. Get solution

32. Is an electron a particle or a wave? Explain. Get solution

33. Calculate the momentum of a photon of wavelength 5000 Å. Get solution

34. Calculate the de Broglie wavelength in meters for a proton moving with a speed of 106 m/s. Get solution

35. What is the de Broglie wavelength in meters of a 75-kg person who is jogging at 5 m/s? Get solution

36. If matter has a wave nature, why is this not observable in our daily experiences? Get solution

37. Multiple ChoiceA. When light shines on a metal surface, the energy of the photoelectrons depends on the(a) intensity of the light.(b) frequency of the light.(c) velocity of the light.(d) all of these.B. A bright-line spectrum of an element(a) is concentrated at the red end.(b) is evenly distributed.(c) is concentrated at the blue end.(d) is characteristic of the element.C. Radioactivity is a property of(a) excited electrons.(b) ultraviolet light.(c) atomic nuclei.(d) X-rays.D. The quantum theory does not explain(a) interference.(b) the photoelectric effect.(c) the Compton effect.(d) line spectra.E. Compared with a light microscope, an electron microscope(a) uses less energy.(b) works faster.(c) can magnify in greater detail.(d) uses longer wavelengths.F. Energy equals Planck’s constant times(a) ....(b) mc.(c) mc2.(d) cλ.G. Rutherford’s gold-foil experiment was instrumental in establishing the concept of(a) an atom.(b) a molecule.(c) subatomic particles.(d) a nucleus in an atom.H. An alpha particle is(a) negatively charged.(b) electrically neutral.(c) a helium nucleus.(d) approximately the same as an electron.I. Experimental support for the arrangement of electrons in distinct energy levels is based primarily on(a) atomic spectra.(b) scattering experiments.(c) the photoelectric effect.(d) radioactivity.J. Which of the following forms of electromagnetic radiation is the most energetic?(a) red(b) ultraviolet(c) infrared(d) green Get solution