# Answers to Second Semester Practice Examorama. Multiple Guess (2 points per question) Multiple Guess (2 points per question) 1. B 1. B 2. A 2. A 3. C.

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Answers to Second Semester Practice Examorama

Multiple Guess (2 points per question) Multiple Guess (2 points per question) 1. B 1. B 2. A 2. A 3. C 3. C 4. B 4. B 5. D 5. D 6. C 6. C 7. D 7. D Worlds longest Moustache

8. B 8. B 9. D 9. D 10. B 10. B 11. D 11. D 12. A 12. A 13. B 13. B 14. C 14. C 15. B 15. B

Matching: (2 points per question) Matching: (2 points per question) 1. I 1. I 2. L 2. L 3. O 3. O 4. V 4. V 5. E 5. E 6. 2 6. 2 Worlds largest tumor

7. W 7. W 8. A 8. A 9. T 9. T 10. E 10. E 11. R 11. R 12. S 12. S 13. K 13. K 14. I 14. I 15. H 15. H

Vertically challenged answers: Vertically challenged answers: 1. Wave speed = frequency x wavelength 1.35 meters 1. Wave speed = frequency x wavelength 1.35 meters 2. Sound: longitudinal 2. Sound: longitudinal –Ocean: transverse –Slinkey: transverse or longitudinal –Stadium: transverse Charles Osborne had the hiccups for 68 years, hiccupping at least 1 time per minute!

3. Atoms are excited, 1 photon is released, when the photon hits an excited atom 2 photons that are in step are released. Photons bounce off 2 mirrors making more photons. One mirror is 95% reflective, 5% gets out as a laser 3. Atoms are excited, 1 photon is released, when the photon hits an excited atom 2 photons that are in step are released. Photons bounce off 2 mirrors making more photons. One mirror is 95% reflective, 5% gets out as a laser

4. If we add energy to light we should be able to start the photoelectric effect. If light is a wave, adding energy changes the brightness which does not control the photoelectric effect. If light is a particle, adding energy makes photons vibrate faster (frequency) which changes the color, which does control the photoelectric effect. Therefore light must be a particle according to Einstein. 4. If we add energy to light we should be able to start the photoelectric effect. If light is a wave, adding energy changes the brightness which does not control the photoelectric effect. If light is a particle, adding energy makes photons vibrate faster (frequency) which changes the color, which does control the photoelectric effect. Therefore light must be a particle according to Einstein.

5. MA = EA/RA 2.2 5. MA = EA/RA 2.2 6. w= fxd891 joules or nm 6. w= fxd891 joules or nm 7. A=v f -v i / t-2 m/s 2 or deceleration of 2 m/s 2 7. A=v f -v i / t-2 m/s 2 or deceleration of 2 m/s 2 8. V=gt3.06 seconds 8. V=gt3.06 seconds

9. Electrons spin giving them a magnetic moment. Most often they come in pairs and cancel each other out, but an atom with an odd number of electrons will have a magnetic moment. This atom will influence the atoms around it to line up with it and make a domain. When all the domains line up the material is magnetic. 9. Electrons spin giving them a magnetic moment. Most often they come in pairs and cancel each other out, but an atom with an odd number of electrons will have a magnetic moment. This atom will influence the atoms around it to line up with it and make a domain. When all the domains line up the material is magnetic.

10. voltage drop is 6 volts at each light bulb 10. voltage drop is 6 volts at each light bulb

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