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A 140-J of work is done on a gaseous refrigerant as it undergoes compression. What is the total amount of energy transferred by heat if there is an increase of 120 J in the internal energy of the system?
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- A steel Column is 10m long and Ø1.2m. It carries a load of 102MN. Given the modulus of Elasticity is 256GPa. Find the stress, Strain, anddetermine how much the column is compressed. {show all the work}An older model car accelerates from rest to speed v in 10 seconds. A newer, more powerful sports car accelerates from rest to 2v in the same time period. What is the ratio of the power of the newer car to that of the older car?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.
- A reservoir discharging water through sluices at a depth hbelow the water surface area Afor various values has given below: hft1011121314( . .)Asqft9501070120013501530If tdenotes time in minutes, the rate of fall of the surface is given by 48dhhAdtEstimate the time taken for the water level to fall from 14 to 10 ft. above the sluices.The displacement of an oscillating spring can be described by x = A cos(wt) where x = displacement at time t, A = maximum displacement, w = angular frequency, which depends on the spring constant and the mass attached to the spring, and t = time. Find the displacement, x, with maximum displacement A of 4 cm, for times from 0 to 120 seconds with increments of 30 seconds, and angular frequencies from 0.4 to 0.6 radians/sec, with increments of 0.1 radians/sec. The displacement for all combinations of times and angular frequencies needs to be calculated. Use meshgrid. Display your results in a matrix with angular frequencies along the top row and times along the left column like so (you may put zero, 0, or NaN, in the upper left corner: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.
- A. Show that the maximum efficiency of Class B power amplifier is (78.5 %). B. Calculate the input power, output power, and efficiency of the amplifier circuit in Fig. 1 for an input voltage that results in a base current of 10 mA peak.0.05 kg of steam at 5 bar is contained in a rigid vessel of volume 0.0076m3 . What is the temperature of the steam? If the vessel is cooled, at what temperature will the steam be just dry saturated? Cooling is contained until the pressure in the vessel is 11 bar, determine the final dryness fraction of the steam, and the heat rejected between the initial and the final states.2. Heat conduction in a square plate Three sides of a rectangular plate (@ = 5 m, b = 4 m) are kept at a temperature of 0 C and one side is kept at a temperature C, as shown in the figure. Determine and plot the ; temperature distribution T(x, y) in the plate. The temperature distribution, T(x, y) in the plate can be determined by solving the two-dimensional heat equation. For the given boundary conditions T(x, y) can be expressed analytically by a Fourier series (Erwin Kreyszig, Advanced Engineering Mathematics, John Wiley and Sons, 1993):
- 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.e maximum amplitude of a sine wave is 2 V, the minimum amplitude is -2 V. why?Using Ford-Fulkerson's Method. Calculate the capacity in megalitres/hour of this pipe system.
