How many photon interactions in each of three filters

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Reference no: EM1348105

Q. A narrow beam of 40 keV which initially contains 500,000 photons is passed through three different filters. One filter is 5 mm Al, one is 3 mm Cu, and one is 1 mm Pb. How many photon interactions in each of these three filters?

Q. A 2.8 kg gold bar at 98 degrees celcius is dropped into .34 kg of water at 23 degree celcius. what is the final temperature? assume the specific heatof gold is 129 J/kg

Reference no: EM1348105

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