Unit 3
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The document discusses atmospheric pressure and different ways of measuring it. It describes how pressure decreases with increasing altitude and defines standard atmospheric pressure at sea level as 101,325 Pa. It also explains different pressure units like bars, pascals, atmospheres and torrs that are used to measure pressure. Common instruments for measuring pressure include mercury barometers, aneroid barometers, and digital barometers.
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This document provides an overview of fluid mechanics and hydrostatics. It defines the different states of matter, density, and fluids. Key concepts explained include pressure, hydrostatic pressure, pressure variations with depth, closed systems, Pascal's principle, buoyancy, and Archimedes' principle. Examples are provided to illustrate these fluid mechanics concepts.
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The document discusses the composition and properties of Earth's atmosphere. It provides details on:
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Fluids static
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Denco chart
1. Psychrometry is the study of atmospheric air and its associated water vapor. It involves using a psychrometric chart to determine properties like moisture content, relative humidity, wet-bulb temperature, dew point temperature, and specific enthalpy based on dry-bulb temperature and vapor pressure.
2. A psychrometric chart plots the relationship between saturated vapor pressure and temperature, allowing users to determine other properties for a given air sample. Lines of constant moisture content and saturation are included.
3. Key terms include moisture content (ratio of mass of water vapor to dry air), relative humidity (ratio of actual vapor pressure to saturated vapor pressure), wet-bulb temperature (temperature reached by evaporative cooling), and
Mekanika Fluida 1 P2. Oke.pdf, Presentasi kuliah pertemuan 2 untuk mata kulia...
The document discusses properties of fluids including density, specific gravity, vapor pressure, cavitation, compressibility, viscosity, and speed of sound. Some key points:
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Diving Medicine & Decompression sickness A Self Directed Learning Module For ...
Applying Henry's Law helps explain decompression sickness in divers in the following ways:
- At high partial pressures of nitrogen during deep dives, large amounts of nitrogen dissolve in the blood and tissues according to Henry's Law.
- When ascending, the decreasing pressure causes nitrogen to come out of solution more quickly than it can be eliminated by the lungs if the rate of ascent is too fast.
- Nitrogen has a high solubility in tissues and blood, so large amounts can accumulate compared to oxygen during a dive. This makes it more likely to come out of solution and form bubbles during rapid ascents.
- Time is needed after deep dives to allow nitrogen to be safely eliminated from the tissues as the diver asc
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