Which energy transfer occurs when you rub your hands together?

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Multiple Choice

Which energy transfer occurs when you rub your hands together?

When you rub your hands together, your muscles supply energy to move them, giving the hands mechanical energy. The friction between your palms resists that motion, so some of that mechanical energy is transformed into heat in the skin. That heat is thermal energy, which you feel as warmth. So the direct energy transfer here is mechanical energy becoming thermal energy through friction.

When you rub your hands together, your muscles supply energy to move them, giving the hands mechanical energy. The friction between your palms resists that motion, so some of that mechanical energy is transformed into heat in the skin. That heat is thermal energy, which you feel as warmth. So the direct energy transfer here is mechanical energy becoming thermal energy through friction.

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