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Dennis Huerta
EngineeringEngineering
A volume of 0.3 m3 of O2 at 200 K and 8 MPa is mixed with 0.5 m3 of N2 at the same temperature and pressure, forming a mixture at 200 K and 8 MPa. Determine the volume of the mixture, using (a) the ideal-gas equation of state, (b) Kay's rule, and (c) the compressibility chart and Amagat's law.
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Justice Walter
EngineeringEngineering
One kilogram of "as received" yard trimmings is made up of approximately 620 g moisture, 330 g of decomposable organic matter (represented by molar composition C1276H21 280 26Nosa) and 50 g of other non-biodegradable constituents. Calculate: (a) the moles of methane gas produced from one mole of decomposable organic matter, (b) the volume of methane gas (0.224 m / mole) from 1 kg of "as received" yard trimmings, and (c) energy (890 kJ/mole CH that could be produced from anaerobic decomposition of one kilogram of "as received" yard trimmings in a landfill. [Given: C, HONn H0 m CHs CO2 + d NH and m (4a + b-2c-3d) / 8]
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Woodard
EngineeringEngineering
A 5000-lb truck is being used to lift a 1000-lb boulder B that is on a 200-lb pallet A. Knowing that the truck starts from rest and that the horizontal force between the tires and the ground is 700 lb, determine the velocity of the boulder after the truck has moved forward 6 ft.
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Savage
EngineeringEngineering
The fuel mixer in a natural gas burner mixes methane (CH4) with air to form a combustible mixture at the outlet.

Determine the mass flow rates at the two inlets needed to produce 0.5 kg/s of an ideal combustion mixture at the outlet. Use data from the tables.
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Laci Stuart
EngineeringEngineering
A three-phase 25-kVA, 480-V, 60-Hz alternator, operating under balanced steady-state conditions, supplies a line current of 20 A per phase at a 0.8 lagging power factor and at rated voltage.

Determine the power triangle for this operating condition.
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Gaven Francis
EngineeringEngineering
Given that the company "Slate Rock and Gravel" has business locations in Granitetown and Bedrock, suppose that the company has been assigned a large block of consecutive IP addresses starting with 192.172.0.0, and that it wishes to set up two subnets, one for each location, with each subnet having sufficient IP numbers assigned to cover the host computers at that location. The IP addresses must be assigned in this order: first to Granitetown, and then to Bedrock. Assume that there are 4,000 computers in Granitetown and 2,000 in Bedrock.

Your task is to assign IP address to the two locations. You must show your steps for each calculation.
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Judd
EngineeringEngineering
Semiconductors are primarily used in? 1) electromechanical controls 2) electronic controls 3) pneumatic controls
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Simeon Esparza
EngineeringEngineering
It is well known that the thermal efficiency of heat engines increases as the temperature of the energy source increases. In an attempt to improve the efficiency of a power plant, somebody suggests transferring heat from the available energy source to a higher-temperature medium by a heat pump before energy is supplied to the power plant. What do you think of this suggestion? Explain.
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Deangelo Chambers
EngineeringEngineering
Which one of the following is NOT a method of universal motor speed control? A. Tapped field windings with a switch selector B. Varying the voltage using semicoinductor devices C. Dynamic braking of the motor's shaft D. Using an adjustable centrifugal switch in parallel with a reistor
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Diya Boone
EngineeringEngineering
An adiabatic closed system is raised 100 m at a location where the gravitational acceleration is 9.8 m/s2. What Is the specific energy change of this system in kJ/kg?
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Mia Doyle
EngineeringEngineering
A college course may have one or more scheduled sections, or may not have a scheduled section. Attributes of Course include courseID, courseName, and units. Attributes of Section include sectionNbr and semester. The value of sectionNbr is an integer, which distinguished one section from another for the same course, but does not uniquely identify a section. There is an operation called findNumSections, which finds the number of sections offered for a given course in a given semester.
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Lilah
EngineeringEngineering
In your opinion, what is the most challenging part of the process? If you had the opportunity, would you build your own house? Why or why not?
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Guest
EngineeringEngineering
Consider 8.0 kg of austenite containing 0.45 wt% C and cooled to less than 727°C (1341°F). (a) What is the proeutectoid phase? (b) How many kilograms each of total ferrite and cementite form? (c) How many kilograms each of pearlite and the proeutectoid phase form? (15 pts.)
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Reagan Schneider
EngineeringEngineering
Differentiate between accuracy and precision.
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Ferrell
EngineeringEngineering
A force 25 N makes an angle of 30,45 and 75 degree with x, y and z axis. What should be the corresponding force vector?
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