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...

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...

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 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...

Two ball bearings from different manufacturers are being considered for a certain application. Bearing A has a catalog rating of 2.0 kN based on a catalog rating system of 3 000 hours at 500 rev/min....

Combine Probs. 112 and 113 for an overall reliability of R = 0.90. Reconsider your selections, and meet this overall reliability goal.

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 0.1-m3 rigid tank initially contains refrigerant-134a at 1.2 MPa and 100 percent quality. The tank is connected by a valve to a supply line that carries refrigerant-134a at 1.6 MPa and 30C. The...

Dehumidification of air (Fig. 19.4-1) for the system of Example 19.4-1 let the vapor is H 2 0 and the stagnant gas is air. Assume the following conditions (which are representative in air...

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...

In the central receiver concept of solar energy collection, a large number of heliostats (reflectors) provide a concentrated solar flux of q''S = 80,000 W/m2 to the receiver, which is positioned at...

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...

(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...

The transfer function that relate-s the change in blood pressure y to a change in u the infusion rate of a drug (sodium nitroprusside) is given by1 The two time delays result from the blood...

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 =...

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

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

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...

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)...

Steam having a quality of 98% at a pressure of 1.37 105 N/m2 is flowing at a velocity of 1 m/s through a steel pipe of 2.7 cm OD and 2.1 cm ID. The heat transfer coefficient at the inner surface,...

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 =...

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...

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.

Determine the couple forces F that must be applied to the handle of the machinist's vise in order to create a compressive force FA in the block Neglect friction at the bearing A. The guide at B is...

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-...

Water in an open dish exposed to dry air at 25oC is found to vaporize at a constant rate of 0.04 g/h-cm2. Assuming the water surface to be at the wet-bulb temperature of ll.0C, calculate the...

(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...

Determine the range of values of P for which equilibrium of the block shown is maintained. , 3 0.25 - 0.20 500 N

Using frequency response arguments, discuss how well e-Gs can be approximated by a two-term Taylor series expansion, that is, by 1 s. Compare your results with those given in the text for a UI Pad...

The figure shows a rectangular member OB, made from ¼-in-thick aluminum plate, pinned to the ground at one end and supported by a ½ -in-diameter round steel rod with hooks formed on the...

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...

A 16 wedge A of negligible mass is placed between two 80-kg blocks B and C which are at rest on inclined surfaces as shown. The coefficient of static friction is 0.40 between both the wedge and the...

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...

Consider an adiabatic equilibrium flash. The variables are all as indicated in Figure. (a) Determine the number of variables. (b) Write all the independent equations that relate the variables. (c)...

Determine the force in members CD, CF, and FG of the Warren truss. Indicate if the members are in tension orcompression. Bl DI 3 m, 3 m 3 m- 3 m- 6 kN 8 KN

A linear array arranged along the z-axis consists of 12 equally spaced elements with d =2. Choose an appropriate incremental phase delay so as to steer the main beam...

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,

While emptying a wheelbarrow, a gardener exerts on each handle AB a force P directed along line CD. Knowing that P must have a 30-lb horizontal component, determine (a) The magnitude of the force P,...

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.

A conical wedge is placed between two horizontal plates that are then slowly moved toward each other. Indicate what will happen to the wedge (a) If μs = 0.20, (b) If μs =...

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...

A gear reduction system consists of three gears A, B, and C. Gear A starts from rest at time t = 0 and rotates clockwise with constant angular acceleration. Knowing that the angular velocity of gear...

The bearing of Prob. 116 is to be sized to have a reliability of 0.96. What basic load rating should be used in selecting the bearing?

The wheel is subjected to a torque M. If the coefficient of kinetic friction between the band brake and the rim of the wheel is k, determine the smallest horizontal force P that must be applied to...

The area shown is revolved about the x axis to form a homogeneous solid of revolution of mass m. Determine by direct integration the moment of inertia of the solid with respect to (a) The x axis, (b)...

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...

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,...

A row of regularly spaced, cylindrical heating elements (1) is used to cure a surface coating that is applied to a large panel (2) positioned below the elements. A second large panel (3), whose top...

Determine the number of theoretical stages required and the optimal-stage locations for the feed and liquid side stream for the distillation process shown in Figure 7.43 assuming that methanol (M)...

Adsorption with activated carbon, made from bituminous coal, of soluble organic compounds (SOCs) to purify surface and ground water is a proven technology, as discussed by Stenzel [Chem. Eng. Prog.,...

A decanter shown in Fig. E. is used to separate a feed that consists of two completely immiscible Liquids, a light component and a heavy component. Because of the large difference in their densities,...

The voltages vR(t), vL(t), and vC(t) in the circuit shown can be drawn as phasors in a phasor diagram. Show that vR(t) + vL(t) + vC(t) = vS(t).

A flow of air at 5C, 90%, is brought into a house, where it is conditioned to 25C, 60% relative humidity. This is done in a SSSF process with a...

The triangular plate ABC is supported by ball-and-socket joints at B and D and is held in the position shown by cables AE and CF. If the force exerted by cable AE at A is 220 lb, determine the moment...

Evaluation of various velocity averages from Pitot tube data. Following are some experimental data 1 for a Pitot tube traverse for the flow of water in a pipe of internal radius 3.06 in.: Plot these...

For each of the following transfer functions, develop both the amplitude and phase angle of the Bode plot. Find AR and ? for each transfer function at of values of w = 0.1,1, and 10. (a) (Ss + 1)(s +...

Consider a two-stage R-12 refrigeration system operating between 0.15 MPa and 1 MPa. The refrigerant leaves the condenser as saturated liquid and is throttled to a flash chamber operating at 0.4 MPa....

Find the pH and fraction of dissociation () of a 0.100 M solution of the weak acid HA with Ka = 1.00 10-5.

An aqueous process stream of 100 gal/h at 2 o C contains 8 wt% Na 2 SO 4 and 6 wt% of a high-molecular-weight substance (A). This stream is processed in a continuous, counter current-flow dialyzer...

The band brake shown is used to control the speed of a rotating drum. Determine the magnitude of the couple being applied to the drum knowing that the coefficient of kinetic friction between the belt...

A heat flux gage of 4-mm diameter is positioned normal to and 1 m from the 5 mm-diameter aperture of a blackbody furnace at 1000 K. The diffuse, gray cover shield (E = 0.2) of the furnace has an...

Calculate the rate of heat loss per foot and the thermal resistance for a 6 in. schedule 40 steel pipe covered with a 3 in. thick layer of 85% magnesia. Superheated steam at 300?F flows inside the...

Microporous silica particles with a density of 2.2 g/mL and a diameter of 10 m have a measured surface area of 300 m2/g. Calculate the surface area of the spherical silica as if it were simply solid...

A liquid mixture of acetone and water contains 35 mole% acetone. The mixture is to be partially evaporated to produce a vapor that is 75 mole% acetone and leave a residual liquid that is 18.7 mole%...

A roof truss is loaded as shown. Determine the force in members GI, HI, and IJ. 12 A 12 ft 12 ft 12 ft 12ft 12 ft B. 9f 9ft 4 kps ON

The magnetic circuit of Problem 1.1 has a nonlinear core material whose permeability as a function of Bm is given by where Bm is the material flux density. a. Using MATLAB, plot a dc magnetization...

Suppose a disk free space list indicates that the following blocks of storage are available: 13 blocks, 11 blocks, 18 blocks, 9 block, and 20 blocks. There is a request allocate 10 contiguous blocks...

An athlete is doing push-ups on an inclined board. Neglecting friction between his shoes and the board, determine the value of θ if he wants to limit the magnitude of the total force...

A small barrel having a weight of 250 lb is lifted by a pair of tongs as shown. Knowing that a = 5in, determine the forces exerted at B and D on tong ABD 6 in. -9 in. 18 in.

A vertical trapezoidal gate that is used as an automatic valve is held shut by two springs attached to hinges located along edge AB. Knowing that each spring exerts a couple of magnitude 8 kip ft,...

Consider the following reduction potentials: Co3+ + 3e Co o = 1.26 V Co2+ + 2e Co o = 20.28 V a. When cobalt metal dissolves in 1.0 M nitric acid, will Co3+ or Co2+ be the primary product (assuming...

Consider an ideal gas-turbine cycle with two stages of compression and two stages of expansion. The pressure ratio across each stage of the compressor and turbine is 3. The air enters each stage of...

A 2-m3 insulated tank containing ammonia at 20C, 80% quality, is connected by a valve to line flowing ammonia at 2 MPa, 60C. The valve is opened, allowing ammonia to flow into...

For the complex distillation operation shown in figure 9.22, use the Fenske equation to determine the minimum number of stages required between: (a) The distillate and feed, (b) The feed and the side...

Problem 7.61 using the method of Sec. 7.6 solve Prob. 7.32. Problem 7.32: For the beam and loading shown, (a) Draw the shear and bending-moment diagrams, (b) Determine the maximum absolute values of...

Two C10 Ã 20 channels are welded to a 10 Ã 35 rolled S section as shown. Determine the moments of inertia and the radii of gyration of the combined section with respect to its...

A small door weighing 16 lb 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 tied to a...

The bent rod ABCD rotates about a line joining points A and D with a constant angular velocity of 75 rad/s. Knowing that at the instant considered the velocity of corner C is upward, determine the...

Estimation of diffusivity for a binary mixture at high density, Predict CD AB for an equimolar mixture of N 2 and C 2 H 6 at 288.2K and 40atm (a) Use the value of D AB at 1atm from Table 17.1-1,...

A mixture of ethylbenzene and xy lenes is to be distilled as shown in figure 9.29. Assuming the applicability of Raoult's and Dalton's laws: (a) Use the Fenske-Underwood-Gilliland method to estimate...

A dialyzer is to be used to separate 300 L/h of an aqueous solution containing 0.1 M NaCI and 0.2 M HCI. Laboratory experiments with the microporous membrane to be used give the following values for...

An MSMPR-type crystallizer is to be designed to produce 2,000 lb/h of crystals of the heptahydrate of magnesium sulfate with a predominant crystal size of 35 mesh. The magma will be 15 vol% crystals....

A process (including valve and transmitter) has the approximate transfer function. G(s) = 2e0.2s/(s + 1) with time constant and time delay in minutes. Determine Pt controller settings and the...

Hydrogen at 15C and at a pressure of 1 atm is flowing along a flat plate at a velocity of 3 m/s. If the plate is 0.3 m wide and at 71C, calculate the following quantities at x = 0.3 m and at the...

The 8-lb rod AB is attached to a collar of negligible weight at A and to a flywheel at B. The flywheel has a weight of 32 lb and a radius of gyration of 9 in. Knowing that in the position shown the...

A set of 2M biorthogonal signals is obtained from a set of M orthogonal signals by augmenting it with the negative of each signal in the set. (a) The extension of orthogonal to biorthogonal signals...

Consider operation of the furnace-re-cooperator combination of problem under conditions for which chemical energy is converted to thermal energy in the combustor at a rate of q comb = 2.0 x 10 6 Wand...

Stearic acid is to be steam distilled at 200C in a direct-fired still, heat-jacketed to prevent condensation. Steam is introduced into the molten acid in small bubbles, and the acid in the vapor...

Air from a reservoir at 20°C and 500 kPa flows through a duct and forms a normal shock downstream of a throat of area 10 cm2. By an odd coincidence it is found that the stagnation pressure...

Ambient air at 100 kPa and 300 K is compressed isentropically in a steady-flow device to 1 MPa. Determine (a) The work input to the compressor, (b) The energy of the air at the compressor exit, and...

Consider a steam power plant that operates on a reheat Rankine cycle and has a net power output of 80 MW. Steam enters the high-pressure turbine at 10 MPa and 500C and the low-pressure turbine at 1...

A mast is mounted on the roof of a house using bracket ABCD and is guyed by cables EF, EG, and EH. Knowing that the force exerted by cable EF at E is 29.7 lb, determine the moment of that force about...

A 70-kg skier starts from rest at point A and skis down the slope shown. Neglecting friction, determine the force exerted on the skier by the snow (a) Just before the skier reaches B, (b) Immediately...

Two identical 0.9-lb slender rods AB and BC are welded together to form an L-shaped assembly. The assembly is guided by two small wheels that roll freely in inclined parallel slots cut in a vertical...

A 200-kg flywheel is at rest when a constant 300 N ??? m couple M is applied at time t = 0. At t = 28s the flywheel reaches its rated speed of 2400 rpm and the couple is removed. Knowing that the...

For the equation (a) Find the transfer function and put it in standard gain/time constant form. (b) Discuss the qualitative form of the response of this system (independent of the input forcing) over...

The weights of the various components of the truck are shown. Replace this system of forces by an equivalent resultant force and specify its location measured fromB. 3500 lb 5500 IbV 1750 lb tonti...

A mechanic uses a piece of pipe AB as a lever when tightening an alternator belt. When he pushes down at A, a force of 580 N is exerted on the alternator B. Determine the moment of that force about...