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The mechanical engineers at the University of Utah end spring semester by roasting a pig and having a picnic. The pig is roughly cylindrical and about 26 cm in diameter. It is roasted over a propane flame, whose products have properties similar to those of air, at 280?C. The hot gas flows across the pig at about 2 m/s. If the meat is cooked when it reaches 95?C, and if it is to be served at 2:00 pm, what time should cooking commence? Assume Bi to be large, but note Problem 7.40. The pig is initially at 25?C.
the coefficient of restitution is 0.9 between the two 60-mm-diameter billiard balls a and b. ball a is moving in the
A supply of steam at a pressure of 4 MPa and a temperature of 332°C (state 1) is used to do mechanical work as it expands to a pressure of 100 kPa and a quality of 90% (state 2). During the expansion process, 60 kJ/kg of heat is removed from the wate..
Draw and label a Flow diagram with the given information shown in brackets and with calculated recovery per stream. Draw and label a Flow diagram with the middlings returned to the rougher.
an adiabatic piston-cylinder system contains a 1000-w immersion heater and 4kg of h2o initially at 1 atm and 96 percent
a tool chest has 980 n weight that acts through the midpoint of the chest. the chest is supported by feet at a and
a turbine takes in 2 kgs neon at 27 degc and 200kpa with negligible velocity. the produced work is 75 kw and 30 kw of
a stationary tethered balloon contains helium gas an ideal gas here at 0.00degc and 0.0700 mpa at a height of 1000 m.
a construction crew lifts about 560 lb of material serveral times during the day from a flatbed truck to a 32 foot
Write a computer program to solve the initial value problem
Typical towns in states with big plains like Texas need an elevated tank to supply tap water. Below there is a picture of a typical elevated tank. If we approximate the tank as a cylinder with a diameter of 50 ft and a height of 25 ft, answer the fol..
1. A six-pole, three-phase, 440-V, 60-Hz induction motor has the following model impedances: RS = 0.8 Q XS = 0.7 Q RR = 0.3 Q XR = 0.7 Q Xm = 35 Q Calculate the input current and power factor of the motor for a speed of 1,200 r/min.
air enters an evaporative cooler at 1 atmosphere 36degc and 20 percent relative humidity at a rate of 4 m3min and it
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