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Social Networking People who are at least 45 years old comprise approximately 34 percent of Internet users and quickly are becoming the largest demographic age group online. These "silver surfers" are online more than six hours per week and are making their presence known on online social networks. Monster's founder Jeff Taylor created Eons (eons.com), which is promoted as an "online gathering place for people lovin' life on the flip side of 50!" BoomerGirl Diary (boomergirl.com) and Not Over The Hill (notoverthehill.com) feature entertainment, health, financial, and travel information. Visit these Web sites and other online social networks aimed exclusively at a mature audience. Compare the content. Which groups and forums are present? What are the members' interests? Which topics are targeted toward this age group? Summarize the information you read and viewed.
Using the relevant data given in Example 4.2.1, determine the temperature distribution across the wall using both linear and quadratic variations and compare the results.
n air compressor operates at steady state with air entering at p1 1 bar t1 17 c and exiting at p2 5 bar. the air
Determine the energy loss that occurs as 40 L/min of water at 10°C flows around a 90° bend in a commercial steel tube having an OD of 20 mm and a wall thickness of 1.5 mm. The radius of the bend to the centerline of the tube is 150 mm.
Water at 20-C ?ows over a 3-m long and 2-m wide ?at plate at 3 m=s. Assume a turbulent ?ow from the leading edge (a trip wire at the leading edge can be used to cause the turbulence) and calculate:
A pin-connected structure consists of a rigid beam ABCD and two supporting bars. Bar (1) is an aluminum alloy [E = 70 GPa] with a cross-sectional area of A1 = 2,400 mm2. Bar (2) is a bronze alloy [E = 100 GPa] with a cross-sectional area of A2 = 6,00..
a tank contains 1 m3 air at 100 kpa 300 k. a pipe flowing air at 1000 kpa 300 k is connected to the tank and it is
Calculate the moment of inertia of the triangular area shown with respect to the X-X centroidal axis and with respect to the base of the triangle.
helium at 810 r 45 ibfin2 and a velovity of 10 fts enters an insulated nozzle operating at steady state and exits at
for the following cross sectiondetermine the coordinates x and y of the centroid c of the area shown in the
Air enters an adiabatic nozzle steadily at 300 kPa, 200oC, and 30 m/s and leaves at 100 kPa and 180 m/s. The inlet area of the nozzle is 80 cm2. Determine Mass flow rate of air through the nozzle.
15 scale, is to be tested at 180 ft/s in a wind tunnel with standard sea-level air, while the prototype will be operated in seawater. Determine the speed of the prototype to ensure Reynolds number similarity.
suppose you are planning a trip in which a spacecraft is to travel at a constant velocity for exactlyseven months as
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