476 Introduction to Quantum Physics*P40.32The photon energy is Ehc==×⋅××=×−−−λ663 10633 10314 1034919..Js3 10 msmJ8ej. The power carried by thebeam is 2 103 14 100 6281819××=−photons sJ photonWej... Its intensity is the average Poyntingvector ISr=×−av2W4mWmPπ23250628175 10261 10...af.(a)SEBEBavrmsrms=°=19012200µµsinmaxmax. Also cmaxmax=. So SEcav=max202µ.EcSBmaxmax....×××=××−−41031026110140 10310468 100127854485µπav2Tm Am sW mNCmsTbgejej(b)Each photon carries momentum Ec. The beam transports momentum at the rate c. Itimparts momentum to a perfectly reflecting surface at the rate2206280419 1089c×−forceWN...(c)The block of ice absorbs energy mLt=∆meltingmtL××−∆333 10102 1052...W 1.5 3 600 sJkgkg.Section 40.5The Wave Properties of Particles
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .