Hot Chocolate Experiment
Have you ever stirred your hot chocolate and noticed that the pitch increases as you continue to tap? Here are recordings of the tapping sound under different conditions.
Condition #3: Do marshmallows impact the change in pitch?
Here we tested cups with and without marshmallows.
Null Hypothesis: There is no substantial difference between cups with or without marshmallows.
Here are recordings of what the tapping sounded like with and without marshmallows:
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