hw14a - HW#13a Note: numbers used in solution steps are...

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HW#13a Note: numbers used in solution steps are different from your WebAssign values. Page 1 of 5 1. Walker3 17.P.042. [565929] Show Details The phase diagram for water is shown in the figure below. (a) What is the temperature T 1 on the phase diagram? 0°C (b) What is the temperature T 2 on the phase diagram? 100°C (c) What happens to the melting/freezing temperature of water if atmospheric pressure is decreased ? It increases. It decreases. Justify your answer by referring to the phase diagram. Key: The slope of the fusion curve is negative. (d) What happens to the boiling/condensation temperature of water if atmospheric pressure is increased ? It increases. It decreases. Justify your answer by referring to the phase diagram. Key: The slope of the vapor-pressure curve is positive. 2. Walker3 17.P.044. [565648] Show Details A sample of pure water is initially at atmospheric pressure and has a temperature that is just below the boiling point. (a) If the temperature of the sample is increased while the pressure is held constant, what phase changes occur? melting evaporation condensing freezing sublimating
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HW#13a Note: numbers used in solution steps are different from your WebAssign values. Page 2 of 5 gas to solid none of these (b) Suppose, instead, that the pressure of the sample is increased while the temperature is held constant. What phase changes occur now? melting evaporation condensing freezing sublimating gas to solid none of these 3. Walker3 17.P.078. [565974] Show Details A 5.0 kg block of ice at -1.5°C slides on a horizontal surface with a coefficient of kinetic friction equal to 0.056 . The initial speed of the block is
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This note was uploaded on 08/25/2010 for the course PHYS 111 taught by Professor Jamesm.lockhart during the Spring '09 term at S.F. State.

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hw14a - HW#13a Note: numbers used in solution steps are...

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