iPad? 11:45 AM Assignment>Open Assignment FULL SCREEN PRINTER VERSION BACK NEXT

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iPad? 11:45 AM Assignment>Open Assignment FULL SCREEN PRINTER VERSION BACK NEXT ASSIGNMENT RESOURCES Chapter 29, Problem 20 GO Homework 21 In the Compton effect, momentum conservation applies, so the total momentum of the photon and the electron is the same before and after the scattering occurs. Suppose that in Figure 29.10 the incident photon moves in the +x direction and the scattered photon emerges at an angle of ? = 90.0°, which is in the-y direction. The incident photon has a wavelength of 7 x 101 m. Find the x and y components of the momentum of the scattered electron. GO Chapter 28. Problem 05 GO GO Electron at rest GO GO Incident X-ray photon Scattered X-ray photon Figure 29.10 GO GO Review Score Review Results by Study objective

Explanation / Answer

a) lambda' = lambda + [(h / m0 c) * (1 - cos theta)]

= (7 * 10-12) + [(6.63 * 10-34 / 9.11 * 10-31 * 3 * 108) (1 - cos 90)]

= 9.42 * 10-12 m

x-component, Px = h / lambda

= (6.63 * 10-34) / (7 * 10-12)

Px = 9.47 * 10-23 kg.m/s

b) y-component, Py = h / lambda

= (6.63 * 10-34) / (9.42 * 10-12)

Py = 7.04 * 10-23 kg.m/s

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