A thin plate of the shape indicated and of mass m is suspended from two springs as shown. If spring 2 breaks, determine the acceleration at that instant (a) Of point A, (b) Of point B. A square plate...
A cubical furnace 2 m on a side is used for heat treating steel plate. The top surface of the furnace consists of electrical radiant heaters that have an emissivity of 0.8 and a power input of 1.5 x...
Consider an ideal gas mixture of n species. (a) Derive an equation for determining the mass fraction of species i from knowledge of the mole fraction and the molecular weight of each of the n...
Growers use giant fans to prevent grapes from freezing when the effective sky temperature is low. The grape, which may be viewed as a thin skin of negligible thermal resistance enclosing a volume of...
Measurement devices and their dynamic5 influence design of feedback controllers. Briefly indicate which of the two systems below would have its closed- loop performance enhanced significantly by...
An insulated piston-cylinder device contains 3 L of saturated liquid water at a constant pressure 180 kPa. An electric resistance heater inside the cylinder is now turned on, and 2000 kJ of energy is...
Consider a steam power plant that operates on a simple ideal Rankine cycle and has a net power output of 45 MW. Steam enters the turbine at 7 MPa and 500C and is cooled in the condenser at a pressure...
The temperature distribution in laser-irradiated materials is determined by the power, size, and shape of the laser beam, along with the properties of the material being irradiated. The beam shape is...
The required tension in cable AB is 800 N. Determine (a) The vertical force P which must be applied to the pedal, (b) The corresponding reaction at C. 400 mm 60 180 mm
Dijkstra posed each of the following solutions as a potential software solution to the critical section problem and then explained why they failed [Dijkstra, 1968]. Provide your explanation about why...
Aluminum sulfate, commonly called alum, is produced as a concentrated aqueous solution from bauxite ore by reaction with aqueous sulfuric acid, followed by a three-stage, countercurrent washing...
A large reservoir at 600 K supplies air flow through a converging-diverging nozzle with a throat area of 2 cm2, A normal shock wave forms at a section of area 6 cm2. Just downstream of this shock,...
A simple Brayton cycle using air as the working fluid has a pressure ratio of 8. The minimum and maximum temperatures in the cycle are 310 and 1160 K. Assuming an isentropic efficiency of 75 percent...
A uniform slender bar AB of mass m is suspended as shown from a uniform disk of the same mass m. Determine the accelerations of points A and B immediately after a horizontal force P has been applied...
Water at 70C is to be passed through a porous polyethylene membrane of 25% porosity with an average pore diameter of 0.3 micron and an average tortuosity of 1.3. The pressures on the downstream and...
Determine Zi Zo and Av for the network of Fig. 8.84. +20 V aSS 12 mA 3 91 = 45 k Z 10 MS2
Carbon monoxide is burned with 100 percent excess air during a steady-flow process at a pressure of 1 atm. At what temperature will 97 percent of CO burn to CO2? Assume the equilibrium mixture...
Collar B slides along rod AC and is attached to a block that moves in a vertical slot. Knowing that R = 18 in., = 30?, = 6 rad/s, and = 4 rad/s2, determine the velocity and acceleration of collar...
Use Table B.11 to determine the specific enthalpy (kJ/mol HCI) of hydrochloric acid containing 1 mol HC1/5 mol H2O at 25C relative to: (a) HCI (g) and H2O (l) at 25C. (b) H2O (1) and an infinitely...
One kilogram of butane (C4H10) is burned with 25 kg of air that is at 30C and 90 kPa. Assuming that the combustion is complete and the pressure of the products is 90 kPa, determine (a) The percentage...
A reaction chamber contains a mixture of CO2, CO, and O2 in equilibrium at a specified temperature and pressure. How will (a) Increasing the temperature at constant pressure and (b) Increasing the...
The liquid level in a reboiler of a steam-heated distillation column is to be controlled by adjusting the control valve on the steam line, as shown in figure. The process transfer function has been...
Find the equivalent resistance of the circuit shown at the terminals A-B. 12 kQ 12 kQ 6 kQ 6 kQ RAB 12 kQ 12 kQ 4 kQ
A promising method of power generation involves collecting and storing solar energy in large artificial lakes a few meters deep, called solar ponds. Solar energy is absorbed by all parts of the pond,...
The drinking water needs of a production facility with 20 employees are to be met by a bobbler type water fountain. The refrigerated water fountain is to cool water from 22 to 8°C and supply cold...
A space vehicle is in a circular orbit of 1400-mi radius around the moon. To transfer to a smaller orbit of 1300-mi radius, the vehicle is first placed in an elliptic path AB by reducing its speed by...
Explain why an economic tradeoff exists between the number of trays and the reflux ratio.
The tank in Fig P2.57 is 2 m wide into the paper. Neglecting atmospheric pressure, find the resultant hydrostatic force on panel BC, (a) From a single formula; (b) By computing horizontal and...
Air in an automobile tire is maintained at a pressure of 220 kPa (gauge) in an environment where the atmospheric pressure is 94 kPa. The air in the tire is at the ambient temperature of 25C. Now a...
Figure shows the block diagram of a wideband frequency modulator using the indirect method. This modulator is used to transmit audio signals containing frequencies in the range of 100 Hz to 15 kHz by...
The tungsten filament described in Problem 12.29 dissipates 75 W in an evacuated spherical light bulb of 75-mm diameter. The bulb is in quiescent air and large surroundings at a temperature of 25C....
The blank for the spool shown in the accompanying figure is to be sand cast out of A-319, an aluminum casting alloy. Make a sketch of the wooden pattern for this part. Include all necessary allowance...
A 500-L insulated tank contains air at 40C, 2 MPa. A valve on the tank is opened, and air escapes until half the original mass is gone, at which point the valve is closed. What is the...
As an alternative to storing radioactive materials in oceanic waters, it is proposed that the system of Problem 3.62 be placed in a large tank for which the flow of water, and hence the convection...
The horizontal x axis is drawn through the centroid C of the area shown and divides the area into two component areas A 1 and A 2 . Determine the first moment of each component area with respect to...
A 45-kg motor is bolted to a light horizontal beam which has a static deflection of 6 mm due to the weight of the motor. The unbalance of the motor is equivalent to a mass of 110 g located 75 mm from...
Flow through a Venturi tube, a Venturi tube, with a throat 3 in. in diameter, is placed in a circular pipe I ft in diameter carrying dry air. The discharge coefficient C d of the meter is 0.98....
The cable segments support the loading shown. Determine the magnitude of the horizontal force P so that xB = 6ft. 5'ft ft 60 lb 2 ft D. -3 ft-
A thirsty woman opens the refrigerator and picks up a cool canned drink at 40F. Do you think the can will sweat as she enjoys the drink in a room at 80F and 50 percent relative humidity?
Determine the angle at which P should act on the block so that the magnitude of P is as small as possible to begin pulling the block up the incline. What is the corresponding value of P? The block...
The vise shown consists of two members connected by two double-threaded screws of mean radius 6 mm and pitch 2 mm. The lower member is threaded at A and B (μs =0.35), but the upper...
A 25-antenna is connected to a 75-lossless transmission line. Reflections back toward the generator can be eliminated by placing a shunt impedance Z at a distance l from the load....
A steel bar, 20 mm in diameter and 200 mm long, with an emissivity of 0.9, is removed from a furnace at 455C and suddenly submerged horizontally in a water bath under atmospheric pressure. Estimate...
Find the total inductance at the terminals of the network in Figure P5.62 mH 3mH 6mH LT 10mH 4mH Figure 5.62
Air at 4 x 10-4 kg/s and 27C enters a triangular duct that is 20 mm on a side and 2 m long. The duct surface is maintained at 100C. Assuming fully developed flow throughout the duct, determine the...
Two loads are suspended as shown from cable ABCD. Knowing that the maximum tension in the cable is 720 lb, determine (a) The distance dB, (b) The distance dC. t ft- 4 h -2ft de 450 lh
A machine element is supported by springs and is connected to a dashpot as shown. Show that if a periodic force of magnitude P = Pm sin ft is applied to the element, the amplitude of the fluctuating...
Consider the cell,|| S.C.E cell solution |whose voltage is - 0.126 V. The cell solution contains 2.00 mmol of Fe(NH 4 ) 2 (SO 4 ) 2 , 1.00 mmol of FeCl 3 , 4.00 mmol of Na 2 EDTA, and lots of buffer,...
A pistoncylinder device contains 5 kg of steam at 100C with a quality of 50 percent. This steam undergoes two processes as follows: 1-2 Heat is transferred to the steam in a reversible manner while...
Determine the force in each member of the truss in terms of the external loading and state if the members are in tension or compression.
An insurance company has hired you as a consultant to improve their understanding of burn injuries. They are especially interested in injuries induced when a portion of a worker's body comes into...
A square plate of pure aluminum 0.5 m on a side and 16 mm thick is initially at 300C and is suspended in a large chamber. The walls of the chamber are maintained at 27C, as is the enclosed air. If...
Two collars C and D move along the vertical rod shown. Knowing that the velocity of collar C is 33 in./s downward, determine(a) The velocity of collar D,(b) The angular velocity of memberAB. -12 ins...
Two identical 16-lb uniform cylinders of radius r = 4 in. are at rest when a couple M of constant magnitude 4 lb ??ft is applied to cylinder A. Slipping occurs between the two cylinders and between...
Height of a packed-tower absorber a packed tower of the type described in Example 23.5-2 is to be used for removing 90% of the cyclohexane from a cyclohexane-air mixture by absorption into a...
A designer has available a number of eight-point FFT chips. Show explicitly how he should interconnect three such chips in order to compute a 24-point DFT.
Chloroform is to be used to extract benzoic acid from wastewater effluent. The benzoic acid is present at a concentration of 0.05 mol/liter in the effluent, which is discharged at a rate of 1,000...
The separation of propane and propylene is accomplished by distillation, but at the expense of more than 100 trays and a reflux ratio of greater than 10. Consequently, the use of adsorption has been...
Two parallel, circular loops carrying a current of 40 A each are arranged as shown in Fig. 5-39 (P5.14). The first loop is situated in the xy plane with its center at the origin and the second loops...
Electronic devices dissipating electrical power can be cooled by conduction to a heat sink. The lower surface of the sink is cooled, and the spacing of the devices w s , the width of the device W d'...
Liquid n-pentane at 25C is burned with 30% excess oxygen (not air) fed at 75C. The adiabatic flame temperature is T ad (C). (a) Take as a basis of calculation 1.00 mol C 5 H 12 (l) burned and use an...
Methane and 30% excess air are to be fed to a combustion reactor. An inexperienced technician mistakes his instructions and charges the gases together in the required proportion into an evacuated...
A radiative heater consists of a bank of ceramic tubes with internal heating elements. The tubes are of diameter D = 20 mm and are separated by a distance s = 50 mm. A reradiating surface is...
As a newly hired engineer of the Ideal Gas Company, you are trying to make a reputation in the Process Control Group. However, this objective turns out to be a real challenge with I. M. Appelpolscher...
A block of weight W is attached to a light rod AD that pivots at pin A. If the coefficient of static friction between the plane and the block is s , determine the minimum angle at which the block...
A load of weight 400 N is suspended from a spring and two cords which 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...
Rod AD is bent in the shape of an arc of a circle of radius b = 150 mm. The position of the rod is controlled by pin B which slides in a horizontal slot and also slides along the rod. Knowing that at...
A spherical aluminum shell of inside diameter D = 2 m is evacuated and is used as a radiation test chamber. If the inner surface is coated with carbon black and maintained at 600 K, what is the...
A 12-oz serving of a regular beer contains 13 g of alcohol and 13 g of carbohydrates, and thus 150 Calories. A 12-oz serving of a light beer contains 11 g of alcohol and 5 g of carbohydrates, and...
A compressor is used to bring saturated water vapor at 1 MPa up to 17.5 MPa, where the actual exit temperature is 650C. Find the irreversibility and the second-law efficiency.
The arm AB of length 5 m is used to provide an elevated platform for construction workers. In the position shown, arm AB is being raised at the constant rate d/dt = 0.25 rad/s; simultaneously, the...
The concrete gravity dam is designed so that it is held in position by its own weight. Determine the minimum dimension x so that the factor of safety against overturning about point A of the dam is...
(a) Calculate the number of theoretical plates needed to achieve a resolution of 2.0 for compounds with unadjusted relative retention times of t2/t1 = 1.01, 1.05, or 1.10. (b) How can you increase N...
A plate of thickness 2L, surface area A s , mass M, and specific heat c p ' initially at a uniform temperature T , is suddenly heated on both surfaces by a convection process (T , h) for a period...
A mass and atmosphere loaded piston/cylinder contains 2 kg of water at 5 MPa, 100C. Heat is added from a reservoir at 700C to the water until it reaches 700C. Find the work, heat transfer, and total...
A small door having a mass of 7 kg is attached by hinges A and B to a wall and is held in the horizontal position shown by rope EFH. The rope passes around a small, frictionless pulley at F and is...
A stadium roof truss is loaded as shown. Determine the force in members EJ, FJ, and EI. 09 kip Ls kipa Skips oa kips -12n--11A-1- 31.A0 15.75 St'sa
Limiting discharge rates for Venturi meters. (a) Starting with Eq. 15.5-34 (for adiabatic flow), show that as the throat pressure in a Venturi meter is reduced, the mass rate of flow reaches a...
Most of the worlds chlorine and sodium hydroxide are obtained through the electrolysis of brine: NaC1 (aq) + H 2 O (1) H 2 (g) + C1 2 (g) + NaOH (aq) (a) Determine the standard heats of formation...
A concentric tube heat exchanger uses water, which is available at 15C, to coo] ethylene glycol from 100 to 60C. The water and glycol flow rates are each 0.5 kg/s. What are the maximum possible heat...
Given the network in figure, find the power dissipated in the 3-? resistor and the energy stored in the capacitor. 2H 3H ww 40 12 v(+ $60 2 F
(a) What differential equation model represents the parallel PID controller with a derivative filter? (b) Repeat for the series Pit) controller with a derivative filter. (c) Simulate the time...
In the expression for uniaxial strain the elongation is specified as (0.0015, 0.000 092) in and the length as l ~ (2.0000, 0.0081) in. What are the mean, the standard deviation, and the coefficient...
A reasonable approximation for the two-dimensional incompressible laminar boundary layer on the flat surface in Fig P4.17 is u = U (2y/∂ - y2/∂2) for y Where ∂ ≈ Cx 1/2 , C =...
Determine the mole fractions of a gas mixture that consists of 75 percent CH4 and 25 percent CO2 by mass. Also, determine the gas constant of the mixture.
For the beam and loading shown, (a) Draw the shear and bending-moment diagrams, (b) Determine the maximum absolute values of the shear and bending moment. 3 kips 5 kips 4 kips CV E B D 2.4 ft- -3 ft-...
Determine the range of values of P for which equilibrium of the block shown is maintained. , 3 0.25 - 0.20 500 N
A binary PCM wave uses unipolar NRZ signaling to transmit symbols 1 and 0; symbol 1 is represented by a rectangular pulse of amplitude A and duration T b . The channel noise is modeled as additive,...
Suppose the page size in a computing environment is 1KB. Give the page number and the offset for the following: a. 899 (a decimal number) b. 23456 (a decimal number) c. 0x3F244 (a hexadecimal number)...
(a) When rinsing clothes with a given amount of water, would one find it more efficient to divide the water and rinse several times; or should one use all the water in one rinse? Explain. (b) Devise...
Consider the following galvanic cell at 25oC: Pt | Cr2+ (0.30 M), Cr3+(2.0 M) | | Co2+(0.20 M) | Co The overall reaction and equilibrium constant value are 2Cr2+(aq) + Co2+(aq) 2Cr3+(aq) + Co(s) K =...
Combine Probs. 112 and 113 for an overall reliability of R = 0.90. Reconsider your selections, and meet this overall reliability goal.
The hot-water needs of a household are met by a 60- L electric water heater whose heaters are rated at 1.6 kW. The hot-water tank is initially full with hot water at 80°C. Somebody takes a shower...
Air enters the compressor of a gas-turbine engine at 300 K and 100 kPa, where it is compressed to 700 kPa and 580 K. Heat is transferred to air in the amount of 950 kJ/kg before it enters the...
An insulated tank that contains 1 kg of O2 at 15°C and 300 kPa is connected to a 2-m3 uninsulated tank that contains N2 at 50°C and 500 kPa. The valve connecting the two tanks is opened, and...
The telescoping arm ABC is used to provide an elevated platform for construction workers. The workers and the platform together have a mass of 240 kg and have a combined center of gravity located...
Block C moves downward with a constant velocity of 2 ft/s. Determine(a) The velocity of block A,(b) The velocity of blockD. B E D
An 80-Mg railroad engine A coasting at 6.5 km/h strikes a 20-Mg flatcar C carrying a 30-Mg load B which can slide along the floor of the flatcar (k = 0.25). Knowing that the flatcar was at rest with...
The beam has weight density . Determine the internal normal force, shear force, and moment at point C. Units Used: kip = 103 lb Given: = 280lb/ft a = 3 ft b = 7 ft c = 8 ft d = 6 ft B B, A, A,
For the frame and loading shown, determine the components of the forces acting on member ABC at B and C. 3 in. E 45 Ib 6 in. 75 in 6 in. 9i 4.5 in.