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Latent Heat & Phase Changes
20. Heat and Temperature / Latent Heat & Phase Changes / Problem 2

A highly energetic object with a mass of 2 kg passes through a horizontal water pipeline containing water at 30 °C. The object's initial speed is 3 km/s, and it loses all its kinetic energy through viscous drag in the water. If 25% of the lost kinetic energy goes to boiling the pipeline water while the rest is lost as turbulence, how much water will evaporate due to viscous drag?

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