Ch. 7
Applying the Concepts

<See the back of the chapter.>

Questions for Thought

 1. 	The frequency of the wave.

 3. 	Blue light carries more energy.  No, because the energy difference between these two colors is very small.  The number of photons determines the intensity of the light.

 5. 	The energy in the light is transferred to the absorbing material.

 6. 	The bluish star is at a higher temperature because higher temperature objects emit more photons of shorter wavelengths (and higher energies) than objects with lower temperatures.

Parallel Exercises

B1.	(a) 2.99792×108m/s (b) 2.99715×108m/s (c) 2.99706×108m/s 

B2.	1.28s

B4.	Also 30o.

B5.	Glass (n=1.5)

B8.	(a) 4.41×108Hz (b) red

<Attached Questions>

 1. T
 2. T
 3. F
 4. T
 5. F
 6. F
 7. T
 8. c
 9. c
10. a
11. d
12. c
13. c
14. b
15. a
16. c
17. a
18. c