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Statement of a problem № 2672

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At 20.0°C a steel ball (a = 1.10x10^(-5) °C-1) has a diameter of 0.9000 cm, while the diameter of a hole in an aluminum plate (a = 2.20 x 10^-5 °C-1) is 0.899 0 cm. At what temperature (the same for both) will the ball just pass through the hole?

Solution:
At 20.0°C a steel ball (a = 1.10x10^(-5) °C-1) has a diameter of 0.9000 cm, wh

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