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## Homework Statement

Consider a potential energy curve and system as shown in Figure C11.5. Imagine that the little atom approaches the big atom from infinity with an initial kinetic energy K=5x10-21 J. How close to the big atom does it get?

a. x=0

b. x=0.04 nm

c. x=0.11 nm

d. x=0.2 nm

e. x=0.3 nm

f. Other

## Homework Equations

## The Attempt at a Solution

I don't get how to solve this at all. Any pointers? Thanks.