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# Tutor profile: Catherine E.

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Catherine E.
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## Questions

### Subject:Physics (Heat Transfer)

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Question:

When does heat transfer stop?

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Catherine E.

When both objects have an equal or balanced temperature. For example, when you touch a piece of metal, it will feel cold at first until enough heat from your hand has transferred to the metal making both items of equal temperature. You don't "feel" the cold anymore because your hand and the metal are now the same temperature.

### Subject:Basic Math

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Question:

There are 3 flavors of yogurt in the refrigerator. Two strawberry, 3 blueberry, and 1 vanilla. If Sue reaches to grab a yogurt cup, what is the probability she will grab one vanilla or one blueberry yogurt?

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Catherine E.

There are 6 total yogurts in the refrigerator. Since there is only 1 vanilla, then the probability of grabbing a vanilla yogurt is 1/6 or 1 out of 6. The probability of grabbing a blueberry yogurt is 3/6 (or one half) since 3 out of the 6 total are blueberry. Therefore, the probability of grabbing a vanilla OR blueberry is 4/6 because 4 out of the 6 total are either vanilla or blueberry. The probability of both flavors is added together.

### Subject:Earth Science

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Question:

What is the main reason plate tectonics shift over time?

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Catherine E.

Heat transfer happening beneath earth's surface (crust) causes changes in the landscape of our planet.

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