Ch. 9 Fluid Mechanics
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Transcript of Ch. 9 Fluid Mechanics
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Ch. 9Fluid
Mechanicspgs. 317 - 342
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Explain the ideal gas law. Explain the relationship among pressure,
volume, and temperature.
Objectives
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The measure of the average kinetic energy of the particles in a substance
SI units for temperature are Kelvin (K) and degrees Celsius (°C)
To convert from the Celsius Scale to Kelvin Scale, add 273.15◦ Example:
Room temperature is 20.°C which is 293.15 K
Temperature (T)
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Relates volume, pressure, and temperature
Temperature – Kelvin Scale kB = Boltzmann’s Constant = 1.38 x 10-23 J/K
Ideal Gas Law
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When the number of gas particles is constant:
Ideal Gas Law
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Pure helium gas is contained in a leakproof cylinder containing a moveable piston. The initial volume, pressure, and temperature of the gas are 15 L, 2.0 atm, and 310 K, respectively. If the gas is rapidly compressed to 12 L and the pressure increases to 3.5 atm, find the final temperature of the gas.