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A 2.5 lbf block 'B' is moving with a velocity Vo of magnitude Vo = 6ft/s as it hits the 1.5 lbf sphere 'A', which is at rest and hanging from a cord attached at O.
Steam is flowing in a line at 100 bar. It is flashed out through a valve to 1 bar pressure. The temperature of the steam after flashing to 1 bar is 100 C.
Helium gas in an ideal Otto cycle is compressed from 12°C and 2 L to 0.25 L, and its temperature increases by an additional 800°C during the heat addition process. The temperature of helium be
If the resultant force .·R is directed along a line measu red 75' clockwise from the positi"e x axis and the magnitude of F2 is to be a minimum. Determine the magnitudes of F R a
A molten mixture of salt (NaNO3-KNO3) is used as the heat transfer fluid for application in a parabolic trough solar field.
An engine block with a surface area measured to be 0.90m2 generates a power output of 55 kW with a net engine efficiency of 35%.
What is a column? what factors determine the amount of load that causes it failure and the manner in which it fails?
What is differential levelling? list the procedure for carrying out a differential levelling exercise where one point is beyond the range of the instrement .
Calculate the static thrust of the turbojet engine having mass flow 88lbm/sec the ratio of air and fuel mass flowing into the turbojet is 50:1 and it's exhaust plane the velocity is 1640 ft/sec and pr
A mass of 2.4 kg of air at 150 Kpa absolute and 12 degrees Celsius is contained in gas tight, frictionless piston cylinder device. The air now compressed to a final pressure of 600kPa abs.
The manometer shown above in problem 1 above contains water and kerosene. with both tubes open to the atmosphere, the free surface elevations differ by H=20mm determine the elevation difference when a
Air flows in a channel whose velocity at 3 neighbouring points a,b, and c, which are 10 cm apart, are shown in the following figure.
Explain the following terms with respect to 4-storke cycle internal combustion engines: stroke/bore ratio, piston displacement, clearance volume, compression ratio, engine displacement, indicated powe
Problem 1: The U-tube manometer shown below is open to the atmosphere and partially filled with water so that the water height in both arms is 20 cm.
Use potential flow theory to determine the lift coefficient of a spinning baseball in terms of the forward velocity (V ) and spin RPM.
The LANDSAT-C Earth resources satellite has a nearly circular orbit with an eccentricity of 0.00132. At perigee the satellite is at an altitude (measured from the Earth's surface) of 417 km.
Sleep apnea is a disorder involving brief interruptions of breathing during sleep. Many patients who suffer from sleep apnea can benefit from devices that maintain a continuous positive airway pressur
A hot dog can be considered to be a cylinder 12 cm long and 2 cm in diameter whose properties are ρ= 980 kg/m^3, Cp = 3.9 kJ/kgoC, k = 0.76 W/moC, and α= 1.99x10^-7 m^2 /s.
Hot water at an average temperature of 90oC passes through a row of eight parallel pipes that are 4 m long and have an outer diameter of 3 cm, located vertically in the middle of a concrete wall (k =
A soap bubble of diameter 24.50 mm is filled with air. The absolute pressure outside the bubble is 100.5 kPa. The gage pressure inside the bubble is 15.90 Pa.
Create a MATLAB function called P_VDW.m that solves for the pressure using the van der Waals Equation of State (EOS). This EOS inputs temperature and molar volume and two parameters, a and b. The equa
Create a MATLAB function called P_IG.m that solves for the pressure of an ideal gas (in Pa) when given the Temperature (in K), and the molar volume (in m3/mol). Note that these are all SI units.
In a micromanufacturing process a 50 nm thick silicon nitride layer is employed as a hard mask for a silicon layer. The etchant is potassium hydroxide (KOH).
A layer of water seperates two smooth surfaces a distance of 2r. Derive an experssion for the force needed to pul the two surfaces apart. Consider the bottom surface fixed. What is the force needed to
A square metal plate is heated to 80 C at the corner corresponding to x=y=1. The temperature distribution in the plate is described by 80e-(x-1)^2e-3(y-1)^2 obtain the surface and contour