ch7 problem40

# Physics: Principles with Applications

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Chapter 7, Problem 40 Question Problem Since the nucleus was at rest before decay, its initial momentum was zero. By the law of conservation of momentum, the total of the momenta of the particles after decay will be zero too. Since the total momentum is conserved, its components in the x and y directions also are conserved. The x component of momentum conservation gives: Rearranging, we get: Similarly, the y component of momentum conservation gives: Rearranging, we get:

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Unformatted text preview: Divide equation (1) by equation (2) to find . (1 of 2) [2/4/2008 5:06:24 PM] Substitute the value of in equation (1) or (2) to find . Therefore, the momentum of the second nucleus has a magnitude of and its direction is clockwise from the direction of the electron. (2 of 2) [2/4/2008 5:06:24 PM]...
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• Momentum, Momentum Conservation

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