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1. A 1968 Volkswagen sedan is driving over a 7300-ft-high mountain pass at a speed of v m/s into a headwind of W m/s. Compute the gage pressure in mPa at a point on the auto where the velocity relative to the auto is v - W m/s. The local air density is 0.984 kg/m3.
2. A liquid is heated in a vertical tube of constant diameter, 15 m long. The flow is upward. At the entrance the average velocity is 1 m/s, the pressure 340,000 Pa, and the density is 1001 kg/m3. If the increase in internal energy is 200,000 J/kg, find the heat added to the fluid.
a system consists of nitrogen n2 in a piston-cylinder assembly initially at p1 20 lbfin2 and occupying a volume of
a jet of air from a nozzle is blown at right angles against a wall in which a pressure tap is located. a manometer
Note in Figs. 10.10 and 10.11 that the minimum energy loss for a gradual contraction (K = 0.04 approximately) occurs when the cone angle is in the range of 15° to 40°. Make scale drawings of contractions at both of these extremes for a reduction f..
Atoms are 1-dimensionally aligned with an inter atomic distance of 10nm. Let’s assume that the positive charge of the nucleus of the atom is infinitely large so that electrons are confined to a specific atom. Then, what wavelength photons are require..
Write a 6 pages research paper Topic: Comparing a T-mobile USB wireless internet card using 4G technology with other companies USB wireless internet cards using Wimax technology.
Nan crystalline materials have grain sizes ranging from 0.01 to 0.1 microns. If the contribution of grain boundary strengthening in an alloy with grains of 0.1 microns is 20 MPa, what would you expect it to be if the grain size were reduced to 0.01 m..
The temperature inside a Carnot refrigerator is maintained at 5 degrees C by rejecting heat to the surrounings at an ambient temperature of 27 degrees C. The inside temperature now decreases to -13 degrees C with the ambient temperature remaining co..
Calculate the expected flow rate in m3 /h. Neglect minor losses.
A 680 liter oxygen tank is filled to the pressure of 13.7 Mpa, and used to help a respiratory patient in a room with a temperature of 20 degrees C. During one treatment, 135 Liters of oxygen is supplied from the tank to the patient. The tank is then ..
initially 0.05 kg of air is contained in a piston-cylinder device at 200 degc and 1.6 mpa. the air then expands at
A sheet of metal was deformed elastically under balanced biaxial tension (σ x = oy, σ z = 0) A. Derive an expression for the ratio of elastic strains, ez/ex, in terms of the elastic constants.
This crate holding 40 bricks, each of mass 1.3kg, is placed on a hydraulic lifting beam as shown. State the order of the lever used here. Calculate the effort required to lift the load. Calculate the mechanical advantage for this system.
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