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Materials Needed:

- potato
- digital clock
- copper coin
- zinc nail
- 2 pieces of electric tape
- 2 copper wires


Step 1: Step 1

Gather the required materials as listed in the materials needed list.
Good job.
well done!
how long does it last?????<br>
<p>I am planing on doing it for a school project but I might use a calculator </p>

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