A stream of propane gas is partially liquefied by throttling from 200 bar and 370 K to 1 bar. What fraction of the gas is liquefied in this process? The vapor pressure of propane is given by Kq....

What are the advantages and disadvantages of making the computer network transparent to the user?

The anatomical center of gravity G of a person can be determined by using a scale and a rigid board having a uniform weight W1 and length l. With the persons weight W known, the person lies down on...

Determine the directions of the principal axes with origin located at point O, and the principal moments of inertia for the area about these axes. Solve using Mohr's circle Given: a = 4 in b = 2 in c...

Knowing that portions AC and BC of cable ACB must be equal, determine the shortest length of cable which can be used to support the load shown if the tension in the cable is not to exceed 725 N....

In order to shorten the distance required for landing, a jet airplane is equipped with moveable vanes which partially reverse the direction of the air discharged by each of its engines. Each engine...

When the power to an electric motor is turned on the motor reaches its rated speed of 2400 rpm in 4s, and when the power is turned off the motor coasts to rest in 40s. Assuming uniformly accelerated...

Gas absorption with chemical reaction (Fig. 18.4-1), rework the problem solved in S18.4, by starting with Eq. 19.1-16. What assumptions do you have to make in order to get Eq. 18.4-4?

Rate of evaporation of n-octane, at 20C, how many grams of liquid n-octane will evaporate into N 2 in 24.5 hr in a system such as that studied in Example 20.1-1 at system pressures of (a) 1atm, and...

Show that the energy (power) of a real-valued energy (power) signal is equal to the sum of the energies (powders) of its even and odd components.

An analog signal of the form xa(t) = a(t) cos2000?t is bandlimited to the range 900 ? F ? 1100 Hz. It is used as an input to the system shown in figure.(a) Determine and sketch the spectra for the...

Before being recirculated to a dryer, air at 96oF, 1 atm, and 70% relative humidity is to be dehumidified to 10% relative humidity. Cooling water is available at 50F. Determine a method for carrying...

Shinskey (1994) has proposed a delay-time compensator of the form, for a FOPTD process, with Kc = 1/Kp and ?I = ?.(a) Derive the closed-loop transfer function and show that the time delay is...

The gate at the end of a 1-m-wide freshwater channel is fabricated from three 125-kg, rectangular steel plates. The gate is hinged at A and rests against a frictionless support at D. Determine the...

A recording tape passes over the 20-mm-radius drive drum B and under the idler drum C. Knowing that the coefficients of friction between the tape and the drums are μs = 0.40 and...

The 3-lb uniform slender bar AB is connected to the 6-lb gear B which meshes with the stationary outer gear C. The centroidal radius of gyration of gear B is 1.2 in. Knowing that the system is...

A radiant heater, which is used for surface treatment processes, consists of a long cylindrical heating element of diameter D 1 = 0.005 m and emissivity ? 1 = 0.80. The heater is partially enveloped...

(a) Determine the impulse response of an FIR lattice filter with parameters K1 = 0.6, K2 = 0.3, K3 = 0.5, and K4 = 0.9. (b) Sketch the direct form and lattice all-zero and all-pole filters specified...

Plot the Bode diagram (0.1 w 100) of the third- order transfer function, Find both the value of w that yields a ? 180 o phase angle and the value of AR at that frequency. G(6) (10s + 1)(2s + 1)(s + 1)

The closed-loop system in Fig has the following transfer functions: (a) Design a feedforward controller based on a steady-state analysis. (b) Design a feedforward controller based on a dynamic...

Standard design practice, as exhibited by the solutions to Probs. 839 to 843, is to assume that the bolts, or rivets, share the shear equally. For many situations, such an assumption may lead to an...

The members of the mechanism are pin connected. If a horizontal force P acts at A, determine the angle for equilibrium. The spring is unstretched when = 90. Units Used: kN = 103 N Given: a = 0.5 m...

You drive a car on a winter day with the atmospheric air at 15C and you keep the outside front windshield surface temperature at + 2C by blowing hot air on the inside surface. If the...

A coolant flows through a rectangular channel (gallery) within the body of a mold used to form metal injection parts. The gallery dimensions are a = 90 mm and b = 9.5 mm, and the fluid flow rate is...

A two-input/two-output process involving simultaneous beating and liquid-level changes is illustrated in Figure. Find the transfer function models and expressions for the gains and the Lime constant...

For the three forces of Prob. 2.38, determine (a) The required value of α if the resultant is to be vertical, (b) The corresponding magnitude of the resultant. Problem 2.38: Knowing...

Consider the chip on the circuit board of Problem 6.26. To ensure reliable operation over extended periods, the chip temperature should not exceed 85C. Assuming the availability of forced air at Too...

The problem of heat losses from a fluid moving through a buried pipeline has received considerable attention. Practical applications include the trans-Alaska pipeline as well as power plant steam and...

Consider the conditions of Example 11.6, but with the continuous fin arrangement of figure used in lieu of the circular fins of figure. The heat exchanger core is fabricated from aluminum, and the...

The presence of a small amount of air may cause a significant reduction in the heat rate to a water-cooled steam condenser surface. For a clean surface with pure steam and the prescribed conditions,...

A series RLC circuit resonates at 1000 rad/s. If C = 20F, and it is known that the impedance at resonance is 2.4, compute the value of L, the Q of the circuit, and the band width.

A typical winter day in Reno, Nevada (39o N latitude), is cold but sunny, and thus the solar heat gain through the windows can be more than the heat loss through them during daytime. Consider a house...

Consider a steady-flow Carnot refrigeration cycle that uses refrigerant-134a as the working fluid. The maximum and minimum temperatures in the cycle are 30 and -20C, respectively. The quality of the...

In the circuit in figure v R (t) = 100e ? 400t V for t R(t) for t > 0. 100 AZVR(t) 25 0

Suppose a system has a disk with 2KB disk blocks and the average access time on a block is 20 milliseconds. A process holding 40KB of memory changes from the running state to the blocked state due to...

Three rods of lengths a = 240 mm, 200mm b = 200mm, and c = 180 mm are welded together to form the component shown. The component is supported by eyebolts at A and C and by a shallow slot cut in a...

To slow down large prime movers like locomotives a process termed dynamic electric braking is used to switch the traction motor to a generator mode in which mechanical power from the drive wheels is...

For the frame and loading shown, determine the force acting on member ABC (a) At B, (b) At C. 4 in., 5 in. 60 lb 4 in. [3 in. 3 in. 5 in.

An experiment is designed to measure the partition coefficient, K, associated with the transfer of a pharmaceutical product through a polymer material. The partition coefficient is defined as the...

Suppose an OS was designed so that processes could be in any of the following states: a. Running: Currently using the CPU. b. Ready: Waiting for the CPU. c. Blocked for Interrupt: Waiting for an...

Carbon molecular sieves are available in two forms from a Japanese manufacturer: Estimate the surface area of eachform. Form A Form B Pore volume, cm/g Average pore diameter 0.38 0.18 5 2.0p 0 um

Are complete combustion and theoretical combustion identical? If not, how do they differ?

To supply heated air to a house, a high-efficiency gas furnace burns gaseous propane (C3H8) with a combustion efficiency of 96 percent. Both the fuel and 140 percent theoretical air are supplied to...

Locate the centroid of the plane area shown. 240 mm 150 mm y =kx?

Determine the coefficients {h(n)} of a high pass linear phase FIR filter of length M = 4 which has an anti symmetric unit sample response h(n) = -h(M ? 1 ? n) and a frequency response that satisfies...

A wet, clay brick measuring 2 4 6 in. has an initial uniform moisture content of 12 wt%..At time = 0, the brick is exposed on all sides to .air such that the surface moisture content is maintained...

A liquidgas fuel mixture consists of 90 percent octane (C8H18), and 10 percent alcohol (C2H5OH), by moles. This fuel is burned with 200 percent theoretical dry air. Write the balanced reaction...

Consider a Carnot-cycle heat pump having 1 kg of nitrogen gas in a cylinder/piston arrangement. This heat pump operates between reservoirs at 300 K and 400 K. At the beginning of the low-temperature...

Locate the centroid of the plane area shown. -12 in. -6 in Sin 9 in. Quarter elipse

Knowing that the coefficient of static friction is 0.25 between the rope and the horizontal pipe and 0.20 between the rope and the vertical pipe determine the range of values of P for which...

The strap wrench shown is used to grip the pipe firmly without marring the surface of the pipe. Knowing that the coefficient of static friction is the same for all surfaces of contact, determine the...

A quarter-circular rod of weight W and uniform cross section is supported as shown. Determine the bending moment at point J when = 30 o . r- B

A uniform slender rod of length L is dropped onto rigid supports at A and B. Immediately before striking A the velocity of the rod is v1. Since support B is slightly lower than support A, the rod...

Knowing that the radius of each pulley is 125 mm and neglecting friction, determine the internal forces at point K of the frame shown. -255 1.15 in 300 N 1.2 -LS

Aluminum wire with a mass per unit length of 0.049 kg/m is used to form the circle and the straight members of the figure shown. Determine the mass moment of inertia of the assembly with respect to...

The steel roll shown weighs 2800 lb, has a centroidal radius of gyration of 6 in., and is lifted by two cables looped around its shaft. Knowing that for each cable TA = 690 lb and TB = 730 lb,...

To simulate materials processing under the microgravity conditions of space, a niobium sphere of diameter 3 mm is levitated by an acoustical technique in a vacuum chamber. Initially the sphere is at...

Two disks, each of mass 5 kg and radius 300 mm, spin as shown at the rate 1 = 1200 rpm about a rod AB of negligible mass which rotates about the horizontal z axis at the rate 2. Determine the maximum...

Under what conditions is a cascade of mixer-settler units probably the best choice of extraction equipment?

A mass of 12 kg of saturated refrigerant-134a vapor is contained in a piston - cylinder device at 240 kPa. Now 300 kJ of heat is transferred to the refrigerant at constant pressure while a 110-V...

The pressure drop per unit length p/L in smooth pipe flow is known to be a function only of the average velocity V, diameter D, and fluid properties and . The following data were obtained for flow of...

Two 6 Ã 4 Ã ½-in. angles are welded together to form the section shown. Determine the moments of inertia and the radii of gyration of the section with respect to the centroidal...

A cascade control configuration is sometimes used to separate different objectives of feedback control. For instance, first an inner loop can be used to stabilize the process, and then an outer loop...

A shell-and-tube heat exchanger has one shell pass and four tube passes. The fluid in the tubes enters at 200?C and leaves at 100?C. The temperature of the fluid entering the shell is 20?C and is...

When is a weak acid weak and when is a weak acid strong? Show that the weak acid HA will be 92% dissociated when dissolved in water if the formal concentration is one-tenth of Ka (F = Ka/10). Show...

A log of burning wood in the fireplace has a surface temperature of 450C. Assume the emissivity is 1 (perfect black body) and find the radiant emission of energy per unit surface area.

Wet biomass waste from a food-processing plant is fed to a catalytic reactor, where in an SSSF process it is converted into a low-energy fuel gas suitable for firing the processing plant boilers. The...

A 10-m high cylinder, cross-sectional area 0.1 m2, has a mass less piston at the bottom with water at 20oC on top of it. Air at 300 K, volume 0.3 m3, under the piston is heated so that the piston...

Determine the force in members IL, GJ, and HK of the truss shown. 0 ki 05 kip ip 05 kip |0ikp 4.5A 4.5 ft fond -6n60--6R6H--6k--6R

The assembly shown consists of two rods and a rectangular plate BCDE which are welded together. The assembly rotates about the axis AB with a constant angular velocity of 10 rad/s, knowing that the...

Heat loss by free convection from a pipe, in Example 14.6-1, would the heat loss be higher or lower if the pipe-surface temperature were 200F and the air temperature were 180F?

Suppose a machines instruction set includes an instruction names swap that operates as follows (as an indivisible instruction): swap (boolean *a, Boolean *b) { boolean t; t = *a; *a =*b; *b = t; }...

Thin film coatings characterized by high resistance to abrasion and fracture may be formed by using micro-scale composite particles in a plasma spraying process. A spherical particle typically...

Solve Sample Prob. 14.4, assuming that cart A is given an initial horizontal velocity v0 while ball B is at rest.

Draw the shear and moment diagrams for the beam. -B

The cover for a 250 Ã 550-mm access hole in an oil storage tank is attached to the outside of the tank with four bolts as shown. Knowing that the density of the oil is 920 kg/m3 and that the...

A passive technique for cooling heat-dissipating integrated circuits involves submerging the ICs in a low boiling point dielectric fluid. Vapor generated in cooling the circuits is condensed on...

Gears A and D are rigidly attached to horizontal shafts that are held by frictionless bearings. Determine (a) The couple 0 M that must be applied to shaft DEF to maintain equilibrium (b) The...

You have analyzed an aqueous ammonia solution and find that it contains 30 wt% NH3. (a) Use Figure 8.5-2 to determine the mass fraction of NH3 in the vapor that would be in equilibrium with this...

Write a shell script to interrogate the operating system to determine the number of processes considered by the short-term scheduler for processor allocation (processes currently ready to run) at any...

One of the ways magnetic disk drive manufacturers increase the capacity of a disk is by adding more surfaces. Does this change the device driver interface for the device? If not, why not?

The 4-ft-diameter log (SG 0.80) in Fig P2.94 is 8 ft long into the paper and dams water as shown. Compute the net vertical and horizontal reactions at point C. Los, 2ft Water 2 fel...

Air enters the evaporator section of a window air conditioner at 100 kPa and 27C with a volume flow rate of 6 m3/min. Refrigerant-134a at 120 kPa with a quality of 0.3 enters the evaporator at a rate...

Knowing that the radius of each pulley is 125 mm and neglecting friction, determine the internal forces at point J of the frame shown. -255 m 1.35 m 12 D. -1.5 -1

Atmospheric air of 40% relative humidity and temperature T = 300 K is in parallel flow over a series of water-filled trays, with U = 12 m/s. What is the rate at which energy must be supplied to ach...

Two seconds are required to bring the piston rod of an air cylinder to rest; the acceleration record of the piston rod during the 2 s is as shown. Determine by approximate means (a) The initial...

A system consists of three particles A, B, and C. We know that mA = 3 kg, mB = 2 kg, and mC = 4 kg and that the velocities of the particles expressed in m/s are, respectively, vA = 4i + 2j + 2k, vB =...

A cylinder fitted with a frictionless piston contains 10 lbm of superheated refrigerant R-134a vapor at 100 lbf/in 2, 300 F. The setup is cooled at constant pressure until the water reaches a quality...

For the tree of Prob. 2.73, knowing that the tension in cable AB is 760 lb and that the resultant of the forces exerted at A by cables AB and AC lies in the yz plane, determine (a) The tension in AC,...

For each of the ternary systems shown in figure, indicate whether: (a) Simple, countercurrent extraction, or (b) Countercurrent extraction with extract reflux, or (c) Countercurrent extraction with...

Consider the liquid storage system of Exercise 15.4 but suppose that the band valve for qs is replaced by a pump and a control valve (cf. Fig). Repeat parts (a) through (c) of Exercise 15.4 for the...

A 1-m3 tank is filled with a gas at room temperature 20C and pressure 100 kPa. How much mass is there if the gas is a) air, b) neon or c) propane?

A constant-volume tank contains a mixture of 1 kmol H2 and 1 kmol O2 at 25C and 1 atm. The contents are ignited. Determine the final temperature and pressure in the tank when the combustion gases are...

A load of weight 400 N is suspended from a spring and two cords that are attached to blocks of weights 3W and W as shown. Knowing that the constant of the spring is 800 N/m, determine (a) The value...

Heat transfer from condensing vapors. (a) The outer surface of a vertical tube I in. in outside diameter and 1 ft long is maintained at 190F. If this tube is surrounded by saturated steam at I atm,...

Consider an LTI system with impulse response h(n) = (1/3)|n| (a) Determine and sketch the magnitude and phase response H()| and < H (), respectively. (b) Determine and sketch the magnitude and phase...

Cocaine metabolism in rats can be studied by injecting the drug and periodically withdrawing blood to measure levels of metabolites by HPLC-mass spectrometry. For quantitative analysis, isotopically...

By using the pre-emphasis filter shown in Figure a and with a voice signal as the modulating wave, and FM transmitter produces a signal that is essentially frequency modulated by the lower audio...

Design an op-amp based circuit to produce the function Vo = 5V1 7V2.

Let the real discrete-time signal x[n] with Fourier transform X(e j? ) be the input to a system with the output defined by (a) Sketch the discrete-time signal s[n] = 1 + cos(? n) and its...