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The velocity in a two-dimensional flow field is given by the equation: V = i2xt - j2yt where the velocity is in m/s when x, y, and t are in metres and seconds respectively and i and j are unit vectors in the x and y directions respectively. Determine expressions for the local and convective components of acceleration in the x and y directions. What is the magnitude and direction of the velocity and acceleration at point x = y = 2 m at t = 0?
suppose the rate of growth of a bacterial population n cellsliter is described by dndt kn -1000. the terms represent
A wheel barrow is used to lift a 200 lb load. The length from the wheel axle to the center of the load is 2 ft. The length from the wheel and axle to the effort is 5 ft. 5. What is the ideal mechanical advantage of the system?
a rocket has an initial mass of 25000 kg of which 20000 kg is fuel and oxygen. it is propelled directly upward from
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an industrial water shutoff valve is designed to operate with 30lbs of force and will encounter 200lbs of resistance
a mass of 55 kg is suspended from a spring of stiffness 83.5 kgcm. a dash pot is fitted and it is found that the
the y-component of the force f which a person exerts on the handle of the box wrench is known to be 320newton. determine the x-component and the magnitude of force.
air flows steadily through an adiabatic non-ideal turbine entering at 150 psia 900degf and 350 fts and leaving at 20
Find the final state inside the tank, A tank contains 2kg of nitrogen at 10K with a quality of 50%.Through a volume flow meter and valve, 0.5kg is now removed while the temperature remains constant.
a cylindrical stone mix concrete beam of diameter d 0.45 initially at ti 20c is exposed to hot gases at tinfinity
a 50-cm by 50-cm plate of pure nickel generates 3.9 mwm3 of energy uniformly within the plate. all four sides of the
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