Chlorobenzene (C 6 H 5 C1), an important solvent and intermediate in the production of many other chemicals, is produced by bubbling chlorine gas through liquid benzene in the presence of ferric...
Replace the distributed loading by an equivalent resultant force and specify where its line of action intersects member BC, measured from C. Units Used: kN = 103N Given: w1 = 200N/m w2 = 100N/m w3 =...
The measured volumetric flow rate of ethane at 10.0 atm absolute and 35C is 1.00 x 10 3 L/h. Using an estimated value of the second virial coefficient in the truncated virial equation (Equation...
A fractionation column operating at 101 kPa is to separate 30 kgh of a solution of benzene and toluene containing 0.6 mass-fraction toluene into an overhead product containing 0.97 mass-fraction...
Locate the center of gravity G(xc, yc) of the streetlight. Neglect the thickness of each segment. The mass per unit length of each segment is given. Given: a = 1 m = AB 12kg/m b = 3 m = BC 8kg/m c...
A thin electrical heater dissipating 4000 W/m 2 is sandwiched between two 25-mm-thick plates whose exposed surfaces experience convection with a fluid for which Too = 20C and h = 400 W/m 2 . K. The...
Write an equation showing how the mass of the substance sought can be converted to the mass of the weighed substance on the right. Sought Wighed Sought Weighed Mn,O, PbO2 (a) SO2 BaSo (b) Mg Mg P20...
A well-insulated rigid tank contains 2 kg of a saturated liquidvapor mixture of water at 100 kPa. Initially, three-quarters of the mass is in the liquid phase. An electric resistance heater placed in...
Two identical billiard balls can move freely on a horizontal table. Ball A has a velocity v0 as shown and hits ball B, which is at rest, at a point C defined by = 45?. Knowing that the coefficient...
Consider a memory system with the following parameters: Tc = 100 ns Cc = 0.01 cents/bit Tm = 1200 ns Cm = 0.001 cents/bit a. What is the cost of 1 MByte of main memory? b. What is the cost of 1 MByte...
A mixture of 54.5 mol% benzene in chlorobenzene at its bubble point is fed continuously to the bottom plate of a column containing two theoretical plates. The column is equipped with a partial...
Five liters of liquid n-hexane and 4 liters of liquid n-heptanes are mixed and burned with 4000 gram- moles of air. Not all of the hydrocarbons are burned in the furnace, and both CO and CO 2 are...
In a Rankine power system, 1.5 kg/s of steam leaves the turbine as saturated vapor at 0.51 bar. The steam is condensed to saturated liquid by passing it over the tubes of a shell-and-tube heat...
Consider a two-stage cascade refrigeration system operating between the pressure limits of 1.2 MPa and 200 kPa with refrigerant-134a as the working fluid. Heat rejection from the lower cycle to the...
Consider the following program: Boolean blocked [2]; Int turn; Void P (int id) { While (true) { Blocked [id] = true; While (turn! = id) { While (blocked [1-id]) /* do nothing */; Turn = id; } /*...
A bonding operation utilizes a laser to provide a constant heat flux, q"0, across the top surface of a thin adhesive-backed, plastic film to be affixed to a metal strip as shown in the sketch. The...
Consider the data for the NACA 2412 airfoil given in Fig. 4.5. Calculate the lift and moment about the quarter chord (per unit span) for this airfoil when the angle of attack is 4 and the free stream...
A nozzle at A discharges water with an initial velocity of 36 ft/s at an angle with the horizontal. Determine (a) The distance d to the farthest point B on the roof that the water can reach, (b) The...
Two surge tanks are used to dampen pressure fluctuations caused by erratic operations of a large air compressor. (See Figure) (a) If the discharge pressure of the compressor is Pd(t) and the...
Atmospheric air is in parallel flow (u = 15 m/s, T = 15C) over a flat heater surface that is to be maintained at a temperature of 140C. The heater surface area is 0.25 m2, and the airflow is known to...
Copper tubing is joined to the absorber of a flat-plate solar collector as shown. The aluminum alloy (2024- T6) absorber plate is 6 mm thick and well insulated on its bottom. The top surface of the...
Consider nodal configuration 3 of Table 4.2. Derive the finite-difference equations under steady-state conditions for the following situations. (a) The boundary is insulated. Explain how Equation...
A piston-cylinder device contains 0.02 m3 of hydrogen at 300 K. It has a diameter of 10 cm. The piston (assumed weightless) is pulled by a connecting rod perpendicular to the piston surface. If the...
A balloon initially contains 65 m3 of helium gas at atmospheric conditions of 100 kPa and 22°C. The balloon is connected by a valve to a large reservoir that supplies helium gas at 150 kPa and...
An annular aluminum fin of rectangular profile is attached to a circular tube having an outside diameter of 25 mm and a surface temperature of 250C. The fin is 1 mm thick and 10 mm long, and the...
The cables attached to the screw eye are subjected to the three forces shown. Express each force in Cartesian vector form and determine the magnitude and coordinate direction angles of the...
Determine the magnitudes of F1, F2 and F3 for equilibrium of the particle F = {- 9i - 8j - 5k}. Units Used: kN = 103 N Given: F = (-9 -8 -5) kN a = 4 m b = 2 m c = 4 m θ1 = 30 deg θ2 = 60...
A 0.2-lb model rocket is launched vertically from rest at time t = 0 with a constant thrust of 2 lb for one second and no thrust for t > 1 s. Neglecting air resistance and the decrease in mass of the...
The 500-lb force acting on the frame is to be resolved into two components acting along the axis of the struts AB and AC. If the components of force along AC are required to be 300 lb, directed from...
Determine the greatest force P that can be applied to the frame if the largest force resultant acting at A can have a magnitude Fmax. Units Used: kN = 103 N Given: Fmax = 2 kN a = 0.75 m b = 0.75 m c...
A gas mixture consisting of 15.0 mole% methane, 60.0% ethylene, and 25.0% ethane is compressed to a pressure of 175bar at 90C. It flows through a process line in which the velocity should be no...
The worker uses the hand truck to move material down the ramp. If the truck and its contents are held in the position shown and have weight W with center of gravity at G, determine the resultant...
The steady-state temperature distribution in a semitransparent material of thermal conductivity k and thickness L exposed to laser irradiation is of the form Where A, a, B, and C are known constants....
In the preliminary design of a furnace for industrial boiler, methane at 25?C is burned completely with 20% excess air, also at 25?C. The feed rate of methane is 450k mol/h. The hot combustion gases...
Calamine, which is used for relief of skin irritations, is a mixture of zinc and iron oxides. A 1.056-g sample of dried calamine was dissolved in acid and diluted to 250.0 mL. Potassium fluoride was...
An AISI 1020 cold-drawn steel shaft with the geometry shown in the figure carries a transverse load of 7 kN and a torque of 107 N m. Examine the shaft for strength and deflection. If the largest...
A rectangular plate is supported by three cables as shown. Knowing that the tension in cable AD is 120 lb, determine the weight of the plate. 36 imemsioos in mehes
Just upstream of a shock wave, the air temperature and pressure are 288 K and 1atm, respectively; just downstream of the wave, the air temperature and pressure are 690 K and 8.656atm, respectively....
In Figure, the logarithm of E r (t) versus the logarithm of time is plotted for polyisobutylene at a variety of temperatures. Make a plot of E r (10) versus temperature and then estimate its T g . 10...
A stripper operating at 50 psia with three equilibrium stages is used to strip 1,000 kmol/h of liquid at 300F having the following molar composition: 0.03% C1, 0.22% C2, 1.82% C3, 4.47% nC4, 8.59%...
Lanthanum was reacted with hydrogen in a given experiment to produce the nonstoichiometric compound LaH2.90. Assuming that the compound contains H 2 , La 2+ , and La 3+ , calculate the fraction of La...
The rectangular platform is hinged at A and B and is supported by a cable that passes over a frictionless hook at E. Knowing that the tension in the cable is 1349 N, determine the moment about each...
The window is held open by cable AB determine the length of the cable and express the force F acting at A along the cable as a Cartesian vector. Given: a = 300 mm b = 500 mm c = 150 mm d = 250 mm...
Two couples act on the frame. If the resultant couple moment is to be zero, determine the distance d between the couple forces F1. Given: F1 = 80 lb F2 = 50 lb a = 1 ft b = 3 ft c = 2 ft e = 3 ft f =...
A 1.475-g sample containing NH4Cl(FM 53.492), K2CO3 (FM 138.21), and inert ingredients was dissolved to give 0.100 L of solution. A 25.0-mL aliquot was acidified and treated with excess sodium...
Determine (a) The x, y, and z components of the 900-N force, (b) The angles θx, θy, and θz that the force forms with the coordinate axes. SK)N 1000 N N (O6 70
Consider the flow over a 22.2 half-angle wedge. If M1 = 2.5, p1 = 1atm, and T1 = 300 K, calculate the wave angle and p2, T2, and M2.
A sedimentation process is to be used to separate pulverized coal from slate. A suspension of finely divided particles of galena (lead sulfide SG = 7.44) in water is prepared. The overall specific...
Calculate Vo in the circuit of Fig. 10.74. soo ki 100 30 FIG. 10.74 Proble 1S
Ethylene oxide is produced by the catalytic oxidation of ethylene: C 2 H 4 (g) + O 2 (g) C 2 H 4 O (g) an undesired competing reaction is the combustion of ethylene to CO 2 . The feed to a reactor...
In a two-dimensional cylindrical configuration the radial (r) and angular () spacing's of the nodes are uniform. The boundary at r = ri is of uniform temperature Ti. The boundaries in the radial...
The specific internal energy of formaldehyde (HCHO) vapor at 1 atm and moderate temperatures is given by the formula U(J/mol) = 25.96T + O.02134T 2 where T is in C. (a) Calculate the specific...
Following the hot vacuum forming of a paper-pulp mixture, the product, an egg carton, is transported on a conveyor for 18 s toward the entrance of a gas-fired oven where it is dried to a desired...
A stadium roof truss is loaded as shown. Determine the force in members BC, BH, and GH. kipa Is kipa 0s kips -12 -11n n -1th- 31.5 A 15.75
A 4-lb collar can slide without friction along a horizontal rod and is released from rest at A. The undeformed lengths of springs BA and CA are 10 in. and 9 in., respectively, and the constant of...
A copper-nickel diffusion couple similar to that shown in Figure 5.1a is fashioned. After a 700-h heat treatment at 1100?C (1373 K) the concentration of Cu is 2.5 wt% at the 3.0-mm position within...
A turbine operates adiabatically with superheated steam entering at T1 and P1 with a mass flow rate m. The exhaust pressure is P2 and the turbine efficiency is . For OIK of the following sets of...
Steam enters an insulated pipe at 200 kPa and 200°C and leaves at 150 kPa and 150°C. The inlet-to-outlet diameter ratio for the pipe is D1/D2 =1.80. Determine the inlet and exit velocities of...
Determine the moment of inertia of the semi-ellipsoid with respect to the x axis and express the result in terms of the mass m of the semi-ellipsoid. The material has a constant density . r= y
Wet concrete exerts a pressure distribution along the wall of the form. Determine the resultant force of this distribution and specify the height h where the bracing strut should be placed so that it...
The section of shaft shown in the figure is to be designed to approximate relative sizes of d = 0.75D and r = D/20 with diameter d conforming to that of standard metric rolling-bearing bore sizes....
A laser-materials-processing apparatus encloses a sample in the form of a disk of diameter D = 25 mm and thickness w = 1 mm. The sample has a diffuse surface for which the spectral distribution of...
Determine vo for each network of Fig. 2.173 for the input shown. 20 V 2 V Ideal Ideal 2.2 k -5 V
To find the Ce4+ content of a solid, 4.37 g were dissolved and treated with excess iodate to precipitate Ce(IO3)4. The precipitate was collected, washed well, dried, and ignited to produce 0.104 g of...
Certain solid substances, known as hydrated compounds, have well-defined molecular ratios of water to some other species, which often is a slat. For example, calcium sulfate dehydrate (commonly known...
The schematic of a single-flash geothermal power plant with state numbers is given in Fig. P1026, geothermal resource exists as saturated liquid at 230°C. The geothermal liquid is withdrawn from...
Temperature rise in an electrical wire. (a) A copper wire, 5 mm in diameter and 15 ft long, has a voltage drop of 0.6 volts. Find the maximum temperature in the wire if the ambient air temperature is...
Electrical heating of a pipe (Fig. 10B.8), in the manufacture of glass-coated steel pipes, it is common practice first to heat the pipe to the melting range of glass and then to contact the hot pipe...
A Bakelite coating is to be used with a 10-mm-diameter conducting rod, whose surface is maintained at 200C by passage of an electrical current. The rod is in a fluid at 25C, and the convection...
Determine the magnitude of the projected component of force FAC acting along the zaxis. Fae - 600 Ib 36 FAR- 700 Ib 18 ri 12 fi 12n, 12
A pistoncylinder device contains 0.85 kg of refrigerant- 134a at 10°C. The piston that is free to move has a mass of 12 kg and a diameter of 25 cm. The local atmospheric pressure is 88 kPa. Now,...
Determine the force in members BG, HG, and BC of the truss and state if the members are in tension or compression. Units Used: kN = 103 N Given: F1 = 6kN F2 = 7kN F3 = 4kN a = 3 m b = 3 m c = 4.5 m ...
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...
(a) From the plot of yield strength versus (grain diameter) ?1/2 for a 70 Cu?30 Zn cartridge brass, Figure, determine values for the constants ? 0 and k y in Equation 7.7. (b) Now predict the yield...
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...
Steady-state temperatures at selected nodal points of the symmetrical section of a flow channel are known to be T2 = 95.47C, T3 = 117.3C, T5 = 79.79C, T6 = 77.29C, T8 = 87.28C, and T10 = 77.65C. The...
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
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...
As shown in Fig. P2.44, the 6-in-thick exterior wall of a building has an average thermal conductivity of 0.32Btu/h ft oR. At steady state, the temperature of the wall decreases linearly from T1 =...
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.
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...
An object of density pa, volume Va, and weight Wa is thrown from a rowboat floating on the surface of a small pond and sinks to the bottom. The weight of the rowboat without the jettisoned object is...
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(x, y) where its line of action intersects the plate....
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 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...
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
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 figure shows a crank loaded by a force F = 190 lbf which causes twisting and bending of the ¾ -in-diameter shaft fixed to a support at the origin of the reference system. In actuality, the...
The beam consists of two segments pin connected at B. Draw the shear and moment diagrams for thebeam. 700 Ib 150 lb/ft 800 Ib - ft IB -8 ft- -6 ft-
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 pipe is held in place by the vice. If the bolt exerts force P on the pipe in the direction shown determine the forces FA and FB that the smooth contacts at A and B exert on the pipe. Given: P =...
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 density and associated percent crystallinity for two polytetrafluoroethylene materials are as follows: (a) Compute the densities of totally crystalline and totally amorphous...
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...
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...
In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation-anion distances are 2.01 Ã (Li-F), 2.82 Ã (Na-Cl), 3.30 Ã (K-Br), and 3.67 Ã (Rb-I), respectively. (a)...
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...
Exit gas from a chlorinator consists of a mixture of 20 mol% chlorine in air. This concentration is to be reduced to 1% chlorine by water absorption in a packed column to operate isothermally at 20C...
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...