Coke can be converted into COa fuel gasin the reaction CO 2 (g) + C (s) 2 CO (g) A coke that contains 84% carbon by mass and the balance noncombustible ash is fed to a reactor with a stoichiometric...

The Pratt bridge truss is subjected to the loading shown. Determine the force in members JI, JE, and DE, and state if the members are in tension or compression. Units Used: kN = 103 N Given: F1 =...

Saturated steam at 100C is heated to 400C. Use the steam tables to determine (a) The required heat input (J/s) if a continuous stream flowing at 100 kg/s undergoes the process at constant pressure...

The boom DF of the jib crane and the column DE has a uniform weight density . If the hoist and load have weight W, determine the normal force, shear force, and moment in the crane at sections passing...

A lever AB is hinged at C and is attached to a control cable at A. If the lever is subjected to a 60-lb vertical force at B, determine (a) The tension in the cable, (b) The reaction at C. 12 in 20 60...

The two major forces opposing the motion of a vehicle moving on a level road are the rolling resistance of the tires, F and the aerodynamic drag force of the air flowing around the vehicle, Fd, given...

You are hiking in the mountains and find a shiny gold nugget. It might be the element gold, or it might be "fool's gold," which is a nickname for iron pyrite, FeS2.What kinds of experiments could be...

The man of weight W1 attempts to lift himself and the seat of weight W2 using the rope and pulley system shown. Determine the force at A needed to do so, and also find his reaction on the seat....

Determine the force in each member of the Howe roof truss shown. State whether each member is in tension or compression. 3KN 6m 3IN Sm---Sm

In Prob. 3.24, determine the perpendicular distance from point C to cable BD. Problem 3.24: A precast concrete wall section is temporarily held by two cables as shown. Knowing that the tensions in...

A person whose mass is 150 lb weighs 144.4 lbf. Determine (a) The local acceleration of gravity, in ft/s2, and (b) The persons mass, in lb and weight, in lbf, if g= 32.174 ft/s2.

For the beam and loading shown, determine (a) The reaction at A, (b) The tension in cable BC. 20 Ib 15 Ib 20 lb 35 lb 15 OB -6 in-t- S in.-e S in.--6 in.-

A turbine discharges 200 kg/h of saturated steam at 10.0bar absolute. It is desired to generate steam at 250C and 10.0 bar by mixing the turbine discharge with a second stream of superheated steam of...

You are checking the performance of a reactor in which acetylene is produced from methane in the reaction 2 CH 4 (g) ? C 2 H 2 (g) + 3 H 2 (g) an undesired side reaction is the decomposition of...

A rectangular steel bar supports the two overhanging loads shown in the figure. Using superposition, find the deflection at the ends and at thecenter. 300 300 500 400 N 400 N Bar, b 6, h 32

The double-toggle mechanism shown is used in a punching machine. Knowing that links AB and BC are each of length 6 in., determine the couple M required to hold the system in equilibrium when Ï =...

The 0.5-kg flyballs of a centrifugal governor revolve at a constant speed v in the horizontal circle of 150-mm radius shown. Neglecting the mass of links AB, BC, AD, and DE and requiring that the...

The schematic of a single-flash geothermal power plant with state numbers is given in Fig. P1062, geothermal resource exists as saturated liquid at 230°C. The geothermal liquid is withdrawn from...

The temperature distribution across a wall 0.3 m thick at a certain instant of time is T(x) = a + bx + cx 2 , where T is in degrees Celsius and x is in meters, a = 200C, b = -200C/m, and c = 30C/m 2....

You recently purchased a large plot of land in the Amazon jungle at an extremely low cost. You are quite pleased with yourself until you arrive there and find that the nearest source of electricity...

Draining of a cylindrical tank with exit pipe (Fig. 7B.9) (a) Rework Example 7.1-1, but with a cylindrical tank instead of a spherical tank. Use the quasi-steady-state approach; that is, use the...

A flat plate of width 1 m is maintained at a uniform surface temperature of Ts = 150C by using independently controlled, heat-generating rectangular modules of thickness a = 10 mm and length b = 50...

Methanol is added to a storage tank at a rate of 1200 kg/h and is simultaneously withdrawn at a rate mw (t) (kg/h) that increases linearly with time. At t = 0 the tank contains 750 kg of the liquid...

A 2-in-diameter solid steel shaft has a gear with ASTM grade 20 cast-iron hub (E = 14.5 Mpsi) shrink-fitted to it. The specifications for the shaft are +0.0000 -0.000 2.000

An FSK system transmits binary data at the rate of 2.5 x 106 bits per second. During the course of transmission, white Gaussian noise of zero mean and power spectral density 10-20 W/Hz is added to...

Storage is required for 35,000 kg of propane, received as a gas at I0(C and l (atm). Two proposals have been made: (a) Store it as a gas at 10(C and 1(atm). (b) Store it as a liquid in equilibrium...

The density and associated percent crystallinity for two polytetrafluoroethylene materials are as follows: (a) Compute the densities of totally crystalline and totally amorphous...

The outer gear C rotates with an angular velocity of 5 rad/s clockwise. Knowing that the inner gear A is stationary, determine (a) The angular velocity of the intermediate gear B, (b) The angular...

A schematic of a clutch-testing machine is shown. The steel shaft rotates at a constant speed . An axial load is applied to the shaft and is cycled from zero to P. The torque T induced by the clutch...

Ethylene oxide is produced by the catalytic oxidation of ethylene: 2C 2 H 4 +0 2 2C 2 H 4 0 an undesired competing reaction is the combustion of ethylene: C 2 H 4 + 3O 2 2C0 2 + 2H 2 0 the feed to...

A heat pump with refrigerant-134a as the working fluid is used to keep a space at 25°C by absorbing heat from geothermal water that enters the evaporator at 50°C at a rate of 0.065 kg/s and...

Two identical aluminum plates are each 2 in thick, and are compressed with one bolt and nut. Washers are used under the head of the bolt and under the nut. Washer properties: steel; ID = 0.531 in; OD...

A solid steel sphere (AISI 1010), 300 mm in diameter, is coated with a dielectric material layer of thickness 2 mm and thermal conductivity 0.04 W/m' K. The coated sphere is initially at a uniform...

Steam at a temperature of 250C flows through a steel pipe (AISI 1010) of 60-mm inside diameter and 75-mm outside diameter. The convection coefficient between the steam and the inner surface of the...

Activity. In this problem, we calculate the pH of the intermediate form of a diprotic acid, taking activities into account. (a) Including activity coefficients, derive Equation 9-11 for potassium...

A molded plastic product (p = 1200 kg/m 3 c = 1500 J/kg K, k = 0.30 W/m K) is cooled by exposing one surface to an array of air jets, while the opposite surface is well insulated. The product may...

While tapping a hole, a machinist applies the horizontal forces shown to the handle of the tap wrench. Show that these forces are equivalent to a single force, and specify, if possible, the point of...

An aqueous acetone solution is fed at a rate of 32.0lb m /h to a stirred tank. A stream of pure methyl isobutyl ketone is also fed to the tank, and the resulting mixture is sent to a settler...

A bolted joint is to have a grip consisting of two 14-mm steel plates and one 14R metric plain washer to fit under the head of the M14 ?2 hex-head bolt, 50 mm long. (a) What is the length of the...

(a) Water flows through a shower head steadily at a rate of 10 L/min. An electric resistance heater placed in the water pipe heats the water from 16 to 43°C. Taking the density of water to be 1...

A cylindrical 1045 steel bar (Figure) is subjected to repeated compression-tension stress cycling along its axis.?If the load amplitude is 22,000 N (4950lb f ), compute the minimum allowable bar...

Consider a plane composite wall that is composed of three materials (materials A, B, and C are arranged left to right) of thermal conductivities k A = 0.24 W/m K, k B = 0.13 W/m K, and k C = 0.50...

The ultimate analysis of a No.4 fuel oil is 86.47 wt% carbons. 11.65% hydrogen, 1.35% sulfur, and the balance noncombustible inerts this oil is burned in a steam-generating furnace with 15% excess...

Draw the free-body diagram of the dumpster D of the truck, which has a weight of 5000 lb and a center of gravity at G. It is supported by a pin at A and a pin-connected hydraulic cylinder BC (short...

The fresh feed to an ammonia production process contains nitrogen and hydrogen in stoichiometric proportion, along with an inert gas (I). The feed is combined with a recycle stream containing the...

Two thermocouples (temperature measurement devices) are tested by inserting their probes in boiling water, recording the readings, removing and drying the probes, and then doing it again. The results...

If P = 6 kN, x = 0.75 m and y = 1 m, determine the tension developed in cables AB, CD, and EF. Neglect the weight of theplate. D. 2 m

A nuclear reactor fuel element consists of a solid cylindrical pin of radius r1 and thermal conductivity kf. The fuel pin is in good contact with a cladding material of outer radius r2 and thermal...

Circular copper rod of diameter D = 1 mm and length L = 25 mm are used to enhance heat transfer from a surface that is maintained at Ts.1 = 100C. One end of the rod is attached to this surface (at x...

The core of a high-temperature, gas-cooled nuclear reactor has coolant tubes of 20-mm diameter and 780-mm length. Helium enters at 600 K and exits at 1000 K when the flow rate is 8 x 10-3 kg/s per...

Consider a thin-walled tube of 10-mm diameter and 2-m length. Water enters the tube from a large reservoir at in = 0.2 kg/s and Tm,i = 47C. (a) If the tube surface is maintained at a uniform...

The feed stream to a Claus plant consists of 20.0 mole% H 2 S and 80.0% CO 2 . One-third of the stream is sent to a furnace where the H 2 S is burned completely with a stoichiometric amount of air...

Square plates freshly sprayed with an epoxy paint must be cured at 140C for an extended period of time. The plates are located in a large enclosure and heated by a bank of infrared lamps. The top...

An equimolar mixture of nitrogen and acetylene enters a steady-flow reactor at 25(C and atmospheric pressure. The only reaction occurring is: N2(g) + C2H2 ( 2HCN(g). The product gases leave the...

A vertical force F acts on the crankshaft. Determine the horizontal equilibrium force P that must be applied to the handle and the x, y, z components of force at the smooth journal bearing A and the...

Au exothermic reaction, A 2B, takes place adiabatically in a stirred-tank system. This liquid phase reaction occurs at constant volume in a 100-gal reactor. The reaction can be considered to be...

An I/O-bound program is one that, if run alone, would spend more time waiting for I/O than using the processor. A processor-bound program is the opposite. Suppose a short-term scheduling algorithm...

Determine the stretch in each of the two springs required to hold the crate of mass mc in the equilibrium position shown. Each spring has an unstretched length δ and a stiffness k. Given: mc =...

Determine the force P needed to hold the cable in the position shown, i.e., so segment BC remains horizontal. Also, compute the sag yB and the maximum tension in thecable. 3 m 6 kN 4 kN +3m-2 m -6 m...

Replace the three forces acting on the plate by a wrench. Specify the magnitude of the force and couple moment for the wrench and the point P(y, z) where its line of action intersects the plate....

Collar A can slide on a frictionless vertical rod and is attached as shown to a spring. The constant of the spring is 4 lb/in., and the spring is unstretched when en h = 12 in. Knowing that the...

For the cantilevered handle in Prob. 441, let Fx = 150 lbf, Fy = 0 lbf, Fz = 100 lbf. Find the deflection at the tip along the x axis. In Prob. 441, The cantilevered handle in the figure is made from...

Error in neglecting the convection term in evaporation (a) Rework the problem in the text in S18.2 by neglecting the term x A (N A + N B ) in Eq. 18.0-1. Show that this leads to this is a useful...

(a) Using the data in Table 18.1, compute the resistance of a copper wire 3 mm (0.12 in.) in diameter and 2 m (78.7 in.) long. (b) What would be the current flow if the potential drop across the ends...

A wooden board AB, which is used as a temporary prop to support a small roof, exerts at point A of the roof a 228-N force directed along BA. Determine the moment about C of that force. 0.12 m D. 18m

The rigid beam of negligible weight is supported horizontally by two springs and a pin. If the springs are uncompressed when the load is removed, determine the force in each spring when the load P is...

The heat transfer rate per unit width (normal to the page) from a longitudinal section, x2 x1, can be expressed as q'12 = h12 (x2 xl)(Ts T), where h12 is the average coefficient for the section of...

A 1.5-kg collar is attached to a spring and slides without friction along a circular rod in a vertical plane. Knowing that the tension in the spring is70 N and the speed of the collar is 3.8 m/s as...

You have been assigned the task of measuring the equilibrium constant for the reaction N 2 O 4 2NO 2 as a function of temperature. To do so, you obtain a rigid 2-liter vessel equipped with a pressure...

In the production of sheet metals or plastics, it is customary to cool the material before it leaves the production process for storage or shipment to the customer. Typically, the process is...

If the bucket weighs 50 lb, determine the tension developed in each of thewires. 30

Determine the horizontal and vertical components of force at pins A and C of the two-member frame. Given: w1 = 500N/m w2 = 400N/m w3 = 600N/m a = 3 m b = 3 m W1 W3 W2 B, } wia -Bx B. Ax 2b 3 2a 3 ,...

The uniform concrete pipe has weight W and is unloaded slowly from the truck bed using the rope and skids shown. If the coefficient of kinetic friction between the rope and pipe is k, determine the...

An air heater for an industrial application consists of an insulated, concentric tube annulus, for which air flows through a thin-walled inner tube. Saturated steam flows through the outer annulus,...

A part made from annealed AISI 1018 steel undergoes a 20 percent cold-work operation. (a) Obtain the yield strength and ultimate strength before and after the cold-work operation. Determine the...

The two blocks shown are originally at rest. Neglecting the masses of the pulleys and the effect of friction in the pulleys and assuming that the coefficients of friction between both blocks and the...

In froth flotation, air is bubbled through an aqueous solution or slurry to which a foaming agent (soap) has been added. The air bubbles carry finely dispersed solids and hydrophobic materials such...

Consider the perpendicular rectangles shown schematically. (a) Determine the shape factor F 12 . (b) For rectangle widths of X = 0.5, 1.5, and 5 m, plot F 12 as a function of Z b for 0.05 Z b 0.4m....

As seen in Problem 3.109, silicon carbide nanowires of diameter D = 15 nm can be grown onto a solid silicon carbide surface by carefully depositing droplets of catalyst liquid onto a flat silicon...

Two steels are being considered for manufacture of as-forged connecting rods. One is AISI 4340 Cr-Mo-Ni steel capable of being heat-treated to a tensile strength of 260 kpsi. The other is a plain...

Replace the loading on the frame by a single resultant force. Specify where its line of action intersects member CD, measured from end C. Given: F1 = 500 N a = 3 m F2 = 300 N b = 2 m c = 1 m F3 = 250...

Determine the moment of inertia of the beam?s cross-sectional area with respect to the x' axis passing through the centroid C. -4 in. 0.5 in. 2.5 in. 0.5 in. 0.5 in.

Three cables are used to support a container as shown. Determine the angle formed by cables AB and AD.

If the diameter of the steel beam shown is 1.25 in, determine the deflection of the beam at x = 8in. 150 lbf 15 10 250 lbf .

A gas contains 80.0wt% propane. 15.0 wt% n-butane and the balance water (a) Calculate the molar composition of this gas on both a wet and a dry basis and the ratio (mol H2O/mol dry gas). (b) If 100...

The solubility coefficient of a gas may be defined as the number of cubic centimeters (STP) of the gas that dissolves in 1 cm3 of a solvent under a partial pressure of 1 atm. The solubility...

An electric air heater consists of a horizontal array of thin metal strips that are each 10 mm long in the direction of an airstream that is in parallel flow over the top of the strips. Each strip is...

A fluid in a state of rigid rotation (a) Verify that the velocity distribution (c) in Problem 1B.1 describes a fluid in a state of pure rotation; that is, the fluid is rotating like a rigid body....

The space truss is supported by a ball-and-socket joint at D and short links at C and E. Determine the force in each member and state if the members are in tension or compression. Given: F1 = (200...

Determine the moment of inertia of the homogeneous pyramid of mass m with respect to the z axis. The density of the material is . Suggestion: Use a rectangular plate element having a volume of dV =...

Gate AB in Fig P2.61 is a homogeneous mass of 180 kg, 1.2 m wide into the paper, resting on smooth bottom B. All fluids are at 20°C. For what water depth h will the force at point B be zero?...

The truck has mass M and a center of mass at G. Determine the greatest load it can pull if. (a) The truck has rear-wheel drive while the front wheels are free to roll, and? (b) The truck has...

Liquid flow out of a spherical tank discharging through a valve can be described approximately by the following nonlinear differential equation: where the variables used arc consistent with other...

Ball B is hanging from an inextensible cord. An identical ball A is released from rest when it is just touching the cord and drops through the vertical distance hA = 200 mm before striking ball B....

A rectangular plate is acted upon by the force and couple shown. This system is to be replaced with a single equivalent force. (a) For = 40, specify the magnitude and the line of action of the...

The unit cell for MgFe2O4 (MgO-Fe2O3) has cubic symmetry with a unit cell edge length of 0.836 nm. If the density of this material is 4.52 g/cm3, compute its atomic packing factor. For this...

A thin, semielliptical plate has a mass m. Determine the mass moment of inertia of the plate with respect to (a) The centroidal axis BB, (b) The centroidal axis CC that is perpendicular to the plate.

The wooden shaft is held in a lathe. The cutting tool exerts force F on the shaft in the direction shown. Determine the moment of this force about the x axis of the shaft. Express the result as a...

The boom AB is held in equilibrium by a ball-and-socket joint A and a pulley and cord system as shown. Determine the x, y, z components of reaction at A and the tension in cable DEC. Given: F = (0 0...

During a hammer thrower??s practice swings, the 16-lb head A of the hammer revolves at a constant speed v in a horizontal circle as shown. If = 3 ft and =60?, determine (a) The tension in wire BC,...