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Principles of the Living Matter A001809 2024-25
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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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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 car reaches a velocity of 40 m/s with an acceleration of 4 m/s^2. How far will it travel while it is accelerating if it is initially at rest?
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As a bacterium swims through water it propels itself with its flagella so as to overcome the frictional drag force and move at constant velocity of 10^(-4) m/s. If the frictional drag force on a bacterium is 10^(-7) N, how much work does the bacterium do in 1 s of constant velocity?
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Calculate the difference in entropy in the reversible process of melting 1 kg of ice at 0°C (273K). The latent heat of fusion is 3.4⋅x10^5 J/kg.
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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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