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26 Cards in this Set

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 Fluids Liquids + gases Density mass/volume Specific gravity density of substance/density of water Density of water 1000 kg/m^3 Pressure force/area, force acting perpendicular to the surface Units of pressure Pa, pascal Hydrostatic gauge pressure p gauuge = density fluid * g * depth P total P on surface + P gauge Buoyant force Net upward force on the object in fluid Archimedes Principle The strength of the buoyant force is equal to the weight of the fluid displaced by the object F = density * volume * g Object will float if density of object < density of fluid Object will sink if density of object> density of fluid Pasxals Law F1/A1 = F2/A2 Flow rate f = Av, how much fluid flows per unit time A - cross sectional area v - average speed of flow Flow speed How fast fluid moving Continuity Equation A1v1 = A2V2 If the tube narrows, speed will increase if the tube widens speed will decrease Conditions for ideal fluid 1.incompressible 2.no friction (viscosity) 3.flow is smooth 4. flow rate is steady Bernoullis equation P1 + 1/2 pv1^2 + pgy1 = P2 + 1/2 pv2^2 + pgy2 p - density y- height Stress force/area Is stress same as pressure no, force in stress equation doesnt have to be perpendicular to the surface as in pressure Strain CHange, change in length/original length Hookes law stress = modulus * strain Tenison/compression L = FL/EA, flea, E youngs modulus Shear X = FL/AG, flag