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Discuss whether the following situations should be modeled as closed systems or open systems. Clearly define the system and its boundaries (graphically) and support your answer: Fire hydrant Hot Air balloon Mylar balloon Computer Propane fuel tank Catalytic converter in an automobile Fireplace Wood Chipper Automobile fuel tank.
What are the methods used to determine if a sensing or measuring device is malfunctioning ?
collar c moves along a circular guide with radius R=2ft with a constant speed v=18ft/s. at the instant, the bars AB and BC are vertical and horizontal respectively. Letting L=4ft and H=5ft, determine the angular acceleration of the bars AB and BC ..
a medical technician uses a pair of four inch long tweezers to remove a wood sliver from a patient. the technician is
The external heat transfer coefficient is h=10 W/m^2*K. What is the rate of heat loss to the ambient?
a thermopane window consists of two pieces of glass k 0.78 wmk 7 mm thick that enclose an air space k 0.026 wmk 7 mm
glycerin is to be pumped at the rate of 250 gpm throughout a flow system which consist of 1500 feet of horizontal 4
two reversible refrigeration cycles operate in series. the first cycle receives energy by heat transfer from a cold
Cooling and Heating Load Estimate using CAMEL program library and the data from DA-9
1. figure shows a pneumatic circuit in which four actuators are controlled.a state the sequence in which the cylinders
Helium enters subsonically and flows isentropically through the converging-diverging duct. Compare the values of Ma, T/T0, and P/P0 for helium with those for air at several locations in the duct. Use 0.163 ≤ Ma ≤ 3.221.
In a refrigerator 1 kW is removed from the -10 degree C cold space and 1.3 kW is moved into the 30 degree C warm space. Find the exergy fluxes including direction associated with the two heat transfers.
a simple pulley with the given radius r used to lift heavy objects is positioned 10 feet above ground level. Given that the pulley rotates theta degrees, determine the height to which the pulley is lifted.
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