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Principles of the Living Matter A001809 2024-25

Principles of the Living Matter A001809 2024-25

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A torque of 100 N m is applied to a wheel with a moment of inertia of 10 kg m^2. If the wheel is initially at rest, what will be the angular velocity of the wheel after 10 s?

A Carnot heat engine, in which the hot reservoir is at 323°C (equivalent to 596 K), has an efficiency of 20%. What is the temperature of the cold reservoir?

A Boeing 737 jet plane lands with a speed of 60 m/s and decelerates at a constant rate of 5 m/s2 as it comes to rest. What is the distance covered on the runway before the plane will come to rest?

120 m

720 m

360 m

600 m

150 m

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By immersing a piece of metal with a mass of 1.6 kg at 363 K in 2 L (which corresponds to 2 kg) of water at 293 K, it is observed that the equilibrium temperature is 313 K. Considering that the specific heat of water is 4186 J kg^(-1) K^(-1), what is the specific heat of the metal?

4186 J kg^(-1) K^(-1)

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1674 J kg^(-1) K^(-1)

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1046 J kg^(-1) K^(-1)