Principles of Physics 11th ISV Edition · Temperature, Heat, and the First Law of Thermodynamics · Problem 22
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Walker, Halliday & Resnick — Temperature, Heat, and the First Law of Thermodynamics: Problem 22
22 Evaporative cooling of beverages. A cold beverage can be kept cold even on a warm day if it is slipped into a porous ceramic container that has been soaked in water. Assume that energy lost to evaporation matches the net energy gained via the radiation exchange through the top and side surfaces. The container and beverage have temperature \( T = 10^\circ\text{C} \), the environment has temperature \( T_{\text{env}} = 32^\circ\text{C} \), and the container is a cylinder with radius \( r = 2.2 \text{ cm} \) and height \( 10 \text{ cm} \). Approximate the emissivity as \( \varepsilon = 1 \), and neglect other energy exchanges. At what rate \( dm/dt \) is the container losing water mass?
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주어진 조건: . A
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Principles of Physics · 11th ISV Edition
저자: Walker, Halliday & Resnick
출판사: Wiley
단원: Temperature, Heat, and the First Law of Thermodynamics