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A school has various student associations. The principal wants to hold a meeting, and she wants each student association to send one representative to this meeting. No student can participate at the meeting as a representative of more than one organization. Find a sufficient and necessary condition on such a meeting being possible.
liquid waterh2o at 200 kpa and 20oc is heated in a chmaber by mixing it with a steam h20 at 200 kpa and 150oc. the
Calculate the maximum bending stress at mid-span, and, for the same section, locate the neutral axis. Neglect the weight of the beam
the following figure shows the schematic diagram of a vapor compression refrigeration system using r-134a as the
consider a small simple rankine power cycle which produces 600kw power from an electric generator with an efficiency of
a heat engine whose thermal efficiency is 40 percent uses a hot reservoir at 700 k and a cold reservoir at 280 k. a
A structural steel bar with a 25 mm x60 mm rectangular cross section is subjected to an axial load of 160 kN. Determine the maximum normal and shear stresses in the bar.
The jib crane is designed for a maximum capacity of 10 kN, and its uniform I-beam has a mass of 200 kg. Plot the magnitude Rof the force on the pin at Aas a function of xthrough its operating range of x= 0.2 m tox= 3.8 m. On the same set of axes, p..
A closed system contains 0.5 kg of nitrogen, initially at 150 KPa with a volume of 0.3 m^3. The system undergoes a poly tropic process resulting in the final state of 240 KPa and 100 C. Determine a) the poly tropic coefficient and b) the associated b..
How much heat is required to raise the temperature of 10 pounds of water from 50 degrees fahrenheit to 70 degrees fahrenheit?
a 4 lb block with an initial velocity of 5 fts is sliding down a 30 degree slope before being slowed by a spring. if
Use the USDA Quick Stats service (http://quickstats.nass.usda.gov//) to compare the 2009 oat yields between New York and California. What additional land would California require to meet the same amount of oat production as New York?
consider the following wind turbine with a constant speed generator connected to the rotor via a conventional
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