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    The uncertainty in reading a laboratory thermometer is $0.5 \degree C$. The temperature of a liquid falls from $20 \degree C$ to $10 \degree C$ as measured by the thermometer. What is the percentage uncertainty in the change in temperature?

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    HLPaper 1A

    The uncertainty in reading a laboratory thermometer is 0.5°C0.5 \degree C0.5°C. The temperature of a liquid falls from 20°C20 \degree C20°C to 10°C10 \degree C10°C as measured by the thermometer. What is the percentage uncertainty in the change in temperature?

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