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Principles of the Living Matter A001809 2024-25
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In an expansion of a gas, the internal energy is decreased by 500 J. If the heat absorbed by the gas during the expansion is 1000 J, what is the work done by the gas?
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Two charges, A (negative) of charge -144x10^(-12)C and B (positive) of charge 256x10^(-12)C, are located (fixed) in a plane at positions of coordinates (16 cm, 0) and (0, 12 cm), respectively. If the magnitude of the electric field due to the charge A in a point P (16 cm, 12 cm) is 90 V/m, the magnitude of the electric field in P due to the two charges is close to
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A moving body has kinetic energy equal to 100 J. To stop it, a constant force of 5 N and opposite to the direction of the motion is applied. After how many meters does the body stop?
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The volume of a gas doubles at constant pressure in a closed container. What is the final temperature if the gas was initially at 30 °C (equivalent to 303 K)?
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A body, thrown vertically upwards in the field of gravity (g = 9.8 m/s^2), reaches the point of maximum height and then falls back, returning exactly to the starting point after 8 seconds. The speed with which it returns to the starting point (neglecting the frictional force with the air) is
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During a Carnot cycle for an ideal reversible engine that operates between two sources at temperatures 327°C (equivalent to 600K) and 27°C (equivalent to 300K), the amount of heat absorbed by the hottest source is equal to 50 kJ. What is the work produced by the cycle?
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