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Q. Two boxes of mass m and 2 m are connected by a rope. If forward force on the more massive box is f, what is the acceleration of less massive box?

Q. An insulated Thermos contains 112cm3 of hot coffee at 89°C. You put a 12 g ice cube at its melting point to cool the coffee. By how lots of degrees have your coffee cooled once the ice has melted and equilibrium is reached? Care for the coffee as though it were pure water and neglect energy exchanges with environment.

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