What is the mechanical energy lost due to friction

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Q1. Suppose an ideal gas is in a container 3L in volume and allowed to expand by having a piston move. The final volume after the piston moves is 15L. If the gas is at first at a pressure of 1×10^5 Pa and a temperature of 300 K, and temperature is maintained, what will be the new pressure?

Q2. A sledge loaded with bricks has a total mass of 18.20 kg and is pulled at constant speed by a rope inclined at 20.8degrees above the horizontal. The sledge moves a distance of 20.4 m on a horizontal surface. The coefficient of kinetic friction between the sledge and surface is 0.500. (a) What is the tension in the rope? N (b) How much work is completed by rope on the sledge? kJ (c) What is the mechanical energy lost due to friction?

Reference no: EM1344629

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