LP2_key

# LP2_key - 1 m x h kgm x h Jss x x mv h p h 34 34 10 2 4...

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Name: ____________________________ Lecture Problem #2 Due Wednesday, January 23, 2008 (2 points) 1. Calculate the wavelength of a tennis ball of mass 57 g traveling at 100 km/h 2. Calculate the wavelength of a neutron traveling at 100 km/h. 3. Calculate the wavelength of a photoelectron which is produced when light of wavelength 140 nm strikes zinc metal. Work function of zinc is 3.7 eV.
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Unformatted text preview: 1. m x h kgm x h Jss x x mv h p h 34 34 10 2 . 4 / 100000 057 . / 3600 10 62608 . 6 âˆ’ âˆ’ = = = = Î» 2. A nm m x h kgm x x h Jss x x mv h p h 140 14 10 4 . 1 / 100000 10 67493 . 1 / 3600 10 62608 . 6 8 27 34 = = = = = = âˆ’ âˆ’ âˆ’ 3. m p c h h c 2 ; 2 + Î¦ = = = Î½ ) ( 2 Î¦ âˆ’ = hc m p A m x hc m h p h 4 . 5 10 4 . 5 ) / ( 2 10 = = Î¦ âˆ’ = = âˆ’...
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