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In a manufacturing facility, 2-in-diamter brass balls (k=64.1Btu/hrftF,=532lbm/ft3,Cp=0.092 Btu/lbmF ) initially at 250F are quenched in a water bath at 120F for a period of

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In a manufacturing facility, 2-in-diamter brass balls (k=64.1Btu/hrftF,=532lbm/ft3,Cp=0.092 Btu/lbmF ) initially at 250F are quenched in a water bath at 120F for a period of 2 minutes at a rate of 120 balls per minute. If the convective heat transfer coefficient in the bath is 42Btu/hrftft2F, determine the temperature of the balls after quenching

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