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Eight particles, each of mass m, are situated at the corners of a cube of side a.
Find the gravitational force exerted on any one of the particles by the other seven. Deduce the total gravitational force exerted on the four particles lying on one face of the cube by the four particles lying on the opposite face.
a shaft consisting of a steel tube of 50 mm outer diameter needs to transmit 100 kw of power while rotating at a
A heat pump uses r134a as the refrigerant to keep a heated space at 20°c by pumping from a geothermal water source. Water from the geothermal source enters the evaporator (a heat exchanger) at 50°c and leaves at 40°c at a rate of 0.08 kg/s. The re..
The consolidation process of a clay layer of 4 meter thickness is solved by a numerical procedure. The consolidation coefficient of the clay is cv = 10-6 m2 /s. The layer is subdivided into 20 small layers. What is the maximum allowable magnitude of..
Calculate the pipe diameter D in inches to 2 decimal places required to give the fluid velocity of 4 ft/sec in the following situation: The formula for the velocity is given by: velocity =Flow rate / Pipe Area And the flow rate = 21 gpm and the Pipe ..
1. Solve Problem 8.109a using the effectiveness-NTU method.
Water cools at a rate of 0.1 deg C per second as it flows in a pipe at 1 m / s. At any fixed location, the temperature is independent of time. If the pipe is 10 m long, what must the temperature be at the upstream end to keep the water temperature at..
draw the projections of a rhombus having diagonals 125mm and 50 mm long, the smaller diagonal of which is parallel to both the principal planes, while the other is inclined at 30 to the H.P.
a bar of high strength aluminum alloy is 150 mm long and has a circular cross section of diameter 40mm. it is subjected
Based on the example done in class for the annulus between rotation cylinders, consider the following. The angular velocity of the outer cylinder is 7908 rpm. The outer cylinder has a radius of 5.06 cm, and the clearance between the cylinders is 0..
In arriving at the equation describing the motion of a vibrating string, the weight was assumed to be negligible. Include the weight of the string in the derivation and determine the describing equation. Classify the equation.
If the exchanger were operated in counterflow with the same overall coefficient and inlet temperatures, what would be the reduction in the required length relative to the value found in part (a)?
the static temperature difference, T2 - T3, of the flow between nozzle exit and rotor exit Assume the turbine operates at the nominal design condition and that Cp = 1.33 kJ/kg K.
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