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A bimetallic strip is made by bonding together a 1.0-mm thick and 15.0-cm long steel strip to a similar strip made of aluminum. The strip is straight when the temperature is 20.0°C. What will the radius of curvature of the strip be when the temperature is 40.0°C? The coefficient of thermal expansion of steel is 10.5 × 10-6 K-1 and that of aluminum is 23.0 × 10-6 K-1.
Sagot :
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