Why are pennies good for simulating radioactive atoms? Check all that apply.

All five choices describe useful features of a penny simulation. A penny’s heads and tails can represent radioactive and nonradioactive atoms, and the two outcomes are easy to see. It is also easy to gather many pennies, and pennies are safe to handle. Finally, flipping a fair coin gives a 50% chance of tails, matching the chance that an atom decays during one half-life cycle.

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