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Question1

A cube of ice is taken from freezer at -8.3°C and placed in a 100 g aluminium calorimeter filled with 289 g of water at room temperature of 20°C. The last situation is observed to be all water at 18°C. What was mass of the ice cube?

Question2

Two blocks have mass m and M = 2.02m, respectively. A light spring is attached to one of them, and the blocks are pushed together, Lopez rodriguez (kyl277) - Momentum - antley - (MWA1) 2 compressing the spring between them. They are secured, in this compressed state, by a cord. They are then placed, at rest, on a horizontal, frictionless surface. The cord holding them together is burned, after that the block of mass M moves to the right with a speed of 1.55 m/s.

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