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X-Rays of Energy 2

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X-rays of energy 2.9 × 104 eV are scattered by a free stationary electron through an angle of 135°.What is the energy of the scattered X-rays,in electron volts? (mel = 9.11 × 10-31 kg, X-rays of energy 2.9 × 10<sup>4</sup> eV are scattered by a free stationary electron through an angle of 135°.What is the energy of the scattered X-rays,in electron volts? (m<sub>el</sub> = 9.11 × 10<sup>-31</sup> kg,   ,h = 6.626 × 10<sup>-34</sup> J • s,c = 3.00 × 10<sup>8</sup> m/s,1 eV = 1.60 × 10<sup>-19</sup> J) ,h = 6.626 × 10-34 J • s,c = 3.00 × 108 m/s,1 eV = 1.60 × 10-19 J)


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