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ch01_odd _final - CHAPTER 1 ATOMS THE QUANTUM WORLD 1.1...

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SM-46 CHAPTER 1 ATOMS: THE QUANTUM WORLD 1.1 microwaves < visible light < ultraviolet light < x-rays < γ -rays 1.3 (a) If wavelength is known, the frequency can be obtained from the relation 8 1 9 c : 2.997 92 10 m s ( ) (925 10 m) νλ ν = × = × 8 1 9 14 1 2.997 92 10 m s 925 10 m 3.24 10 s ν × = × = × (b) 8 1 3 2.997 92 10 m s ( ) (4.15 10 m) ν × = × 8 1 3 10 1 2.997 92 10 m s 4.15 10 m 7.22 10 s ν × = × = × 1.5 3 max Wien’s law states that constant 2.88 10 K m. T λ = = × 3 max 6 max 2.88 10 K m If /K 1540 C 273 C 1813 K, then 1813 K 1.59 10 m, or 1590 nm T λ λ × = ° + ° = = = × 1.7 (a) From and , we can write c E h λ = = n n 1 34 8 9 1 19 (6.626 08 10 J s) (2.997 92 10 ) (589 10 m) 3.37 10 J E hc λ = = × × × = ×
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