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Mid 3 Review

Mid 3 Review. What is the angle between Jim’s and Mary’s time axes? (Explain). 2. Determine the time sequence that the events shown as B and C are seeing in (a) Jim’s frame and (b) in Mary’s frame. (Explain using the diagram in Figure 4.1). 3. Solution is next. Energy Levels. Absorption.

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Mid 3 Review

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  1. Mid 3 Review

  2. What is the angle between Jim’s and Mary’s time axes? (Explain) 2. • Determine the time sequence that the events shown as B and C are seeing in (a) Jim’s frame and (b) in Mary’s frame. (Explain using the diagram in Figure 4.1) 3

  3. Solution is next

  4. Energy Levels Absorption E3 E2 271 Yes 4.54 eV 2 eV 617 E1 Emission The additional line is absent in the absorption spectrum since in the cold gas there are no electrons in level E2 to make E2E3 transition 485

  5. h(f1-f2)= eF eF=h(9.4-3.2)x1014 h=4.1x10-15 eV/Hz F=2.6 V 7.52-4.22=3.3 eV

  6. c 2hf=1.01 MeV f=1.2x1020 Wien’ law lT=constant Curve 1

  7. c E=hc/l-4.58 hc/l=3 eV No electrons emitted 400 nm ->3/4 x 10-15 Hz

  8. hf=6.6x10-34x5x1014=33x10-20 J a e

  9. mvr=n(h/2p) a

  10. T4 e c

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