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States of Matter Chapter 13

States of Matter Chapter 13. Understand and Utilize PRESSURE of a Fluid P = Force /Area Expansion and Contraction of matter caused by changes in Temperature Ideal Gas Law PV = nRT Combined Gas Law P 1 V 1 /T 1 = P 2 V 2 /T 2 Boyles Law ( const T) P 1 V 1 = P 2 V 2

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States of Matter Chapter 13

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  1. States of MatterChapter 13 Understand and Utilize PRESSURE of a Fluid P = Force /Area Expansion and Contraction of matter caused by changes in Temperature Ideal Gas Law PV =nRT Combined Gas Law P1V1 /T1 = P2V2 /T2 Boyles Law (const T) P1V1= P2V2 Charles Law (const P) V1 /T1 = V2 /T2 Utilize PASCAL – BERNOULLI – and ARCHIMEDES Principles

  2. Ideal Gases • Ideal Gas Law PV =nRT • Combined Gas Law P1V1 /T1 = P2V2 /T2 • Boyles Law (const T) P1V1= P2V2 • Charles Law (const P) V1 /T1 = V2 /T2

  3. Pressure - Area • P = Force /Area • F1* A2 = F2* A1 Hydraulics

  4. When Bad Tanks go BadPressure Builds The Boston Molasses Disaster, also known as the Great Molasses Flood and the Great Boston Molasses Tragedy, occurred on January 15, 1919, in the North Endneighborhood of Boston, Massachusettsin the United States. A large molassesstorage tank burst, and a wave of molasses rushed through the streets at an estimated 35 mph (56 km/h), killing 21 and injuring 150. The event has entered local folklore, and residents claim that on hot summer days, the area still smells of molasses.[1] The collapse unleashed an immense wave of molasses between 8 and 15 ft (2.5 and 4.5 m) high, moving at 35 mph (56 km/h), and exerting a pressure of 2 ton/ft² (200 kPa).[6] The molasses wave was of sufficient force to damage the girders of the adjacent Boston Elevated Railway's Atlantic Avenuestructure and tip a railroad car momentarily off the tracks. Nearby, buildings were swept off their foundations and crushed. Several blocks were flooded to a depth of 2 to 3 feet (60 to 90 cm).

  5. . Pascal and Archimedes Pascal's Principle Pressure is transmitted undiminished in an enclosed static fluid. Archimedes' Principle Hmm! The crown seems lighter under water!

  6. Buoyancy • Pressure = Fg / A • Fluid Pressure = ρ h g • F Buoyancy = (ρWater )(Vol)(g) Equal Volumes Feel Equal Buoyant Forces

  7. . Bernoulli Equation

  8. LIFT .

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