Why is the reynolds number for onest of turbulence
Why is the Reynolds Number for onest of turbulence given by Re > 2000 in fully flowing pipes, and Re > 500 in partly flowing pipes and onther open channels?
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A 1.0-m radius flywheel is to be made from steel in the form of a solid disc. If the flywheel when turning at 60 rpm store as much energy as a 100-W lamp uses in one minute, how thick must the flywheel be if the density of steel is 7880 kg.m-3.
Determine the highest pressure the liquid water can have at the exit of the pump. Neglect the kinetic and potential energy changes of water, and take the specific volume of water to be 0.001 m3/kg
An insulated piston-cylinder device contains 5 L of saturated liquid water at a constant pressure of 150 kPa. An electric resistance heater inside the cylinder is now turned on, and 2200 kJ of energy is transferred to the steam.
Consider a thermodynamic system executing the two reveraible proceses shown in the sketch (ab and adb). What is the heat transferred to an ideal gas if p2=2pa and v2=2v1? express your answer in terms of the gas constant R and T.
What is the mass of the container? Ignore the mass of the balloon and the air within it. Do not neglect the buoyant force exerted on the shipping container by the water. The density of seawater is 1025 kg/m3.
The effective area of the hole is 11.4 × 10-3 m2 and is located 2.0 m beneath the surface of the lake. What volume of water per second leaks into the ship?
What is the optimal number of cases to have on hand to minimize expected total costs in a single week? show your calculations.
A woman with wieght 637N lies on a bed of nails. the bed has a weight of 735N and a lenght of 1.72m. the bed is held up by 2 supports, one ate the head and the other at the foot.
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Problem: Compare independent variables, dependent variables, and extraneous variables.
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