Engineering

Given A = {1,2,42,57,99,538,677}, B = {1,5,6,7,{2,3} , and C ={1,{7}, {8,9}}, answer the following questions, use the proper notation:Write an inequality that represents the cardinality of any proper subset of A. Lets say the cardinality of the subset is C.
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Air flows through a device in which heat and work is exchanged. There is a single inlet and outlet, and the flow at each boundary is steady and uniform. The inlet flow has the following properties: flowrate 50 kg/s, T 25 C, and velocity 150 m/s. Heat is added to the device at the rate of 42 MW, and the shaft work is -100 kW (assume the efficiency is 100 %). The exit velocity is 400 m/s Calculate the specific stagnation enthalpy (J/kg or kJ/kg) at the inlet, and use the 1st Law to calculate the specific stagnation enthalpy at the exit. Assume constant cp1.0 kJ/kg -K. Calculate the temperature of the air at the exit. Was the assumption of constant cp a good one?
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An inductor (L = 400 mH), a capacitor (C = 4.43 F), and a resistor (R = 500 ) are connected in series. A 44.0-Hz AC generator connected in series to these elements produces a maximum current of 385 mA in the circuit. (a) Calculate the required maximum voltage Vmax.(b) Determine the phase angle by which the current leads or lags the applied voltage.
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this road sign means end road work
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Write a program to store numbers from 1 to 100 in an array. Print out all the even numbers from the array. Use the enhanced FOR loop for printing out the numbers.
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A particle is moving along a straight line with an initial velocity of 3 m/s when it is subjected to a deceleration of a = - 1.1 v^1/2 m/s^2 .A. Determine how far it travels before it stops.B. How much time does it take?
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The Program Manager (PM) should request a Counterintelligence (CI) analysis when an acquisition program containing Critical Program Information (CPI) is initiated. The CI analysis focuses on _____________________ and on how to counter the opposition's collection efforts.
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For the following pairs of sinusoidal time functions, determine which one leads/lags and by how much. (a) ????1(????)=4sin(6104????+60) V and ????2(????)=2cos(6104????20) V. (b) ????(????)=10cos(400????75) V and ????(????)=4sin(400????+30) A.
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A floor in an office building is made of a reinforced concrete slab 10 in. deep and spans 20 ft. For the purposes of calculating the tributary load you can assume the slab is 10 ft. wide. This scenario can be modelled as a simply supported beam, 20 ft. long, 10 in. deep and 10 ft. wide. Calculate the maximum factored maximum moments and shears on this structure using the appropriate load combinations discussed in class. Note which loading combination is critical. You can assume the uniform live load is 50 psf. Hint: since this is not a member that carries lateral load, there are no significant wind or earthquake loads contributing to the shear and moments in the member. Since this is not on the roof there are no roof or snow loads. h = 10 in. 20 ft.
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Consider the circuit below where R1 = R4 = 5 Ohms, R2 = R3 = 10 Ohms, Vs1 = 9V, and Vs2 = 6V. Use superposition to solve for the value of V2 in volts due to Vs1 alone. Put your answer in the box below without the units. Consider the same circuit. Now, solve for V2 in volts due to the contribution of Vs2 alone. Put your answer in the box below without the units. Consider the same circuit. Now, solve for V2 in volts due to the both Vs1 and Vs2. Put your answer in the box below without the units.Figure:Resistors are connected in series and parllel
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Is it possible to maintain a pressure of 10 kpa in a condenser that is being cooled by river water entering at 20 C?
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Create a program that keeps track of student information at a college. The student information should include name, identification number, and grade point average, with the unique identifier (key) for each student being the identification number. The implementation should be a binary search tree.
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Which scenarios are examples of negative stabilizing feedbacks?
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Air at 40C flows over a long, 25-mm-diameter cylinder with an embedded electrical heater. In a series of tests, measurements were made of the power per unit length, P, required to maintain the cylinder surface temperature at 300C for different free stream velocities u of the air. The results are as follows: Air velocity, u (m/s) 1 2 4 8 12 Power, P (W/m) 450 658 983 1507 1963 (a) Determine the convection coefficient for each velocity, and display your results graphically. (b) Assuming the dependence of the convection coefficient on the velocity to be of the form h = Cu n , determine the parameters C and n from the results of part (a)
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A soil specimen was tested to have a moisture content of 32%, a void ratio of 0.95, and a specific gravity of soil solids of 2.75. Determine: a. the degree of satruation b. porosity c. dry unit weight
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Two substances, A and B, initially at different temperatures, come into contact and reach thermal equilibrium. The mass of substance A is 6.01 g and its initial temperature is 20.0 degrees Celsius. The mass of substance B is 25.6 g and its initial temperature is 52.2 degrees Celsius. The final temperature of both substances at thermal equilibrium is 46.1 degrees Celsius. If the specific heat capacity of substance B is 1.17 J/g degrees Celsius, what is the specific heat capacity of substance A
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Determine the sinusoidal time functions corresponding to each of the following phasors: (a) 525 V, ????=1000 rad/s (????) ????5 A, ????=100 Hz
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ben is surveying a plot to build a road 5 km long. how many meters long will the road be?
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The thermal conductivity of a solid depends upon the solids temperature as k = a T+b where a and b are constants. The temperature in a planar layer of this solid as it conducts heat is given by:a. aT+b= x +C2b. aT+ b = C1x^2 +C2c. aT^2+ bT= C1x+ C2d. aT^2+ +bT= C1x^2+ C2e. None of these
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A mechanical system comprises three subsystems in series with reliabilities of 98%, 92%, and 87%. What is the overall reliability of the system?
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Two plates are separated by a 1/4 in space. The lower plate is stationary; the upper plate moves at 10 ft/s. Oil (viscosity of 2.415 lb/ft-s), which fills the space between the plates, has the same velocity as the plates at the surface of contact. The variation in velocity of the oil is linear.What is the shear stress(in units of lbf/in2) in the oil?
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What are the de Broglie frequencies and wavelengths of (a) an electron accelerated to 50 eV (b) a proton accelerated to 100 eV
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An airplane is flying in a straight line with a velocity of 200 mi/h and an acceleration of 3 mi/h2. If the propeller has a diameter of 6 ft and is rotating at an angular rate of 120 rad/s, determine the magnitudes of velocity and acceleration of a particle located on the tip of the propeller.
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A flow of 100 mgd is to be developed from a 190-mi^2 watershed. At the flow line the area's reservoir is estimated to cover 3900 acres. The annual rainfall is 40 in. the annual runoff is 14 in. and the annual evaporation is 49 in. 1. Find the net gain or loss in storage this represents. 2. Calculate the volume of water evaporated in acre* ft and cubic meters.
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