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7. please help 7. What is the maximum frequency X-ray that can be produced by an electron that has a kinetic energy of 2.00 x

7. please help

7. What is the maximum frequency X-ray that can be produced by an electron that has a kinetic energy of 2.00 x 104 ev? 1.36 x 1018 Hz 1.88 x 1056 Hz ) 3.00 x 1037 Hz 0 4.83 x 1018 Hz

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