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Chemical engineering A spot welding operation performed on two pieces of steel yielded a nugget with a diameter of 5 mm and a thickness of

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A spot welding operation performed on two pieces of steel yielded a nugget with a diameter of 5 mm and a thickness of 1 mm. The welding time was 0.1 s. The melting energy for the steel is 20 J/mm2. Assuming the heat conversion efficiency as 10%, the power required for performing the spot welding operation is kW (round off to two decimal places)

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