Question

Lily is stirring a cup of coffee with a spoon. She stops stirring and removes the spoon.

She notices that the coffee is still swirling. Give reason.​

Answer 1

Answer:

When the tea leaves are rotating around the bottom of a cup, they spiral towards the center of the cup as they follow the motion of the water that was induced by stirring. They move towards the center after the spoon is removed and, hence, when the coffee in the cup begins to spin down towards a state of rest.

Explanation:

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Answer 2

Answer:

When the tea leaves are rotating around the bottom of a cup, they spiral towards the center of the cup as they follow the motion of the water that was induced by stirring. They move towards the center after the spoon is removed and, hence, when the coffee in the cup begins to spin down towards a state of rest.

Explanation:

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