2. Convert 30 µg/ft³ to kg/m³ NB: (1ft=12 inches, 1 inch = 2.54 cm) Answ: 1.06 x 10 kg/m³
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- 2.897 lb air is at 1 atm, 360 °R in a vertical piston-cylinder assembly. The air is compressed to state 2 at 111.6 atm, and 250.95 °R, and obeys the polytropic rule (pvn = constant). During the process, 170 Btu releases from the process in the form of heat transfer. Determine: The specific volume of the air at state 1 and state 2 in The work of the process in Btu. The specific internal energy of the air at state 2 in Btu/lb If the area of the piston is 5 in.2 and the mass of the piston is negligible, compute the force that exerts on the piston to maintain the pressure at state 2. Given that the atmospheric pressure is 1 atm.The following system of equations is designed to determine concentrations (the c.s in g/m3), c1, c2, and c3, in a series of coupled reactors as a function of the amount of mass input to each reactor (the right-hand sides in g/day): 15c1 − 3c2 − c3 = 3800 −3c1 + 18c2 − 6c3 = 1200 −4c1 − c2 + 12c3 = 2350 57 Determine the value of the concentrations using the Gauss-Seidel method and using 0 as initial values until the absolute relative error reaches less than 1% or it reaches the 10th iteration which comes first.Using Ford-Fulkerson's Method. Calculate the capacity in megalitres/hour of this pipe system.
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- (b) A 15 HP, 240 V, 1150 rpm shunt motor draws 55 A when operating at rated conditions. The resistance of shunt field winding is 109.1 Q and the resistance of armature is 0.364 Q. Determine the no- load speed, assuming the total loss at no-load is 970.6 W.A spontaneous exothermic reaction at a constant temperature and pressure of 50∘C and 2.0 atm has an enthalpy decrease of 350 kJ. This reaction performs 150 kJ of useful work, which is 54% of the maximum work that could be done. What is the reaction’s change of entropy? Express your answer to two significant figures and include the appropriate units.(b) Due to frequency, a BTS transmitting information at 1800 MHz with an output power of 10 Watts (W) will cover only half the area of a similar BTS transmitting at 900 MHz. Explain what could be done and the tradeoff for the 1800 MHz BTS to cover the same area as the 900 MHz BTS?
- Solve for the Taylor Series Expansion or Formula for the function f(x) below centered at a=pi/2. Approximate f(pi/4) accurate up to 3 significant figures.Example (2): Design an Ayrton shunt by indirect method to provide an ammeter with current ranges 1A, 5A, and 10A, if PMMC meter have internal resistance of 5002 and full scale current of 1mA.165. The projection of the point on the X axis defines the peak amplitude of the a. above phase b. below phase c. in phase d. out of phase