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Q. A scaffold of mass 78 kg and length 5.30 m is supported in a horizontal position by a vertical cable at each end. A window washer of mass 86 kg stands at a point 1.1 m from one end. What is the tension in (1) nearer (relative to the person) cable and (2) farther (relative to the person) cable?

Q. What would be the equilibrium temperature when a 227 block of copper at 265 is placed in a 155 aluminium calorimeter cup containing 844 of water at 14.50?

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