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An particle is a Helium nucleus and has mass 4 u, which is "4 atomic units." Suppose it collides head-on in an elastic collision with a stationary...

An α particle is a Helium nucleus and has
mass 4 u, which is “4 atomic units.” Suppose
it collides head-on in an elastic collision with
a stationary gold nucleus inside a block of
material. The mass of a gold nucleus is 197 u.
What percentage of the α’s kinetic energy is
lost in this collision?

SHow work

1. 8%
2. 2%
3. 10%
4. 0%
5. 4%
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Top Answer

Let me explain the... View the full answer

phy.docx

Sol: we use for the mass of the alpha particle andfor the mass of the gold nucleus
in equation,
We compute the final kinetic energy of the gold nucleus (which must be the
same as the kinetic energy...

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