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Question Difficulty A neutron collides elastically with a helium nucleus (at rest initially) whose mass is...

Question Difficulty A neutron collides elastically with a helium nucleus (at rest initially) whose mass is four times that of the neutron. The helium nucleus is observed to scatter at an angle θ2 = 53° from the neutron's initial direction. The neutron's initial speed is 64000·m/s.

Determine the angle at which the neutron scatters, θ1, measured from its initial direction. °

What is the speed of the neutron after the collision? m/s

What is the speed of the helium nucleus after the collision? m/s

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