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## Homework Statement

A spring is stretched by a force of 0.80n a distance of 0.012m. Find how far it will stretch when the force is 0.54n.

One problem is that I don't know how to find k.

## Homework Equations

F=kΔd

## The Attempt at a Solution

F=kΔd

F=k(0.012m)

What is k?