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Today, 01:05

My science fair project problem statement is: "How many pennies in a stack will shine a flashlight for the longest amount of time?"

My hypothesis is "If a stack of two pennies is connected with an Argentium wire to a light source's circuit, then it will produce light."

With this experiment, what could be my controlled and constant variables?

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  1. Today, 03:08
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    The constant is the light source and the pennies are the controlled i think.
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