n-Octane gas (C8H18) is burned with 80 percent excess air in a constant pressure burner. The air and fuel enter this burner steadily at standard conditions and the products of combustion leave at...

Two B85 V belts are used in a drive composed of a 5.4-in driving sheave, rotating at 1200 rev/min, and a 16-in driven sheave. Find the power capacity of the drive based on a service factor of 1.25,...

Stainless steel (AISI 304) ball bearings, which have uniformly been heated to 850C, are hardened by quenching them in an oil bath that is maintained at 40C. The ball diameter is 20 mm, and the...

How does the B-H curve of a single-phase transformer relate to the voltage and current waveforms found on a transformer winding?

Annular aluminum fins of rectangular profile are attached to a circular tube having an outside diameter of 50 mm and an outer surface temperature of 200C. The fins are 4 mm thick and 15 mm long. The...

Given the following information, calculate the standard potential for the reaction, FeY- + e- FeY2- where Y is EDTA. FeY_ + e-= Fe2+ + Y4- Fey?-: K, = 2.1 1014 FeY E--0.730 V Kr = 1.3 1025

The windlass is subjected to load W. Determine the horizontal force P needed to hold the handle in the position shown, and the components of reaction at the ball-and-socket joint A and the smooth...

Consider two tanks, A and B, connected by a valve, as shown in Fig. P3.97. Each has a volume of 200 L and tank A has R-12 at 25C, 10% liquid and 90% vapor by volume, while tank B is evacuated. The...

Average flow velocity in turbulent tube flow. (a) For the turbulent flow in smooth circular tubes, the function 1 is sometimes useful for curve-fitting purposes: near Re = 4 x 10 3 , n = 6; near Re =...

The metal iridium has an FCC crystal structure. If the angle of diffraction for the (220) set of planes occurs at 69.22( (first-order reflection) when monochromatic x-radiation having a wavelength of...

Determine the mass moment of inertia of the thin plate about an axis perpendicular to the page and passing through point O. The material has a mass per unit area of 20kg/m2. 200 mm 200 mm 200 mm

Saturated steam at 1 atm condenses on the outer surface of a vertical. 100-mm-diameter pipe 1 m long, having a uniform surface temperature of 94C. Estimate the total condensation rate and the heat...

At a particular axial station, velocity and temperature profiles for laminar flow in a parallel plate channel have the form u(y) = 0.75[1 (y/y o ) 2 ] T(y) = 5.0 + 95.66(y/y o ) 2 47.83(y/yo) 4...

Sketch the (1101) and (1120) planes in a hexagonal unit cell.

Express each force acting on the pipe assembly in Cartesian vectorform. F= 600 lb 120 = 400 lb

Refrigerant-134a enters the compressor of a refrigerator at 100 kPa and - 20oC at a rate of 0.5 m3/min and leaves at 0.8 MPa. The isentropic efficiency of the compressor is 78 percent. The...

The frame ACD is hinged at A and D and is supported by a cable that passes through a ring at B and is attached to hooks at G and H. Knowing that the tension in the cable is 1125 N, determine the...

A gas containing nitrogen, benzene, and toluene is in equilibrium with a 40 mole% benzene 60 mole% toluene liquid mixture at 100C and 10 atm. Estimate the gas-phase composition (mole fractions) using...

A turntable A is built into a stage for use in a theatrical production. It is observed during a rehearsal that a trunk B starts to slide on the turntable 12 s after the turntable begins to rotate....

A pitched flat roof truss is loaded as shown. Determine the force in members CE, DE, and DF. 2 kips 4 kips 4 kips 4 kips 2 kips 1.5 ft 75 t D! 7 ft 7 ft

A U-tube mercury manometer is used to measure the pressure at a point on the wing of a wind-tunnel model. One side of the manometer is connected to the model, and the other side is open to the...

A temperature control system for a distillation column is shown in figure. The temperature T of a tray near the top of the column is controlled by adjusting the reflux flow rate R. Draw a block...

The specific enthalpy of liquid n-hexane at 1 atm vanes linearly with temperature and equals 25.8 kJ/kg at 30C and 129.8 kJ/kg at 50C. (a) Determine the equation that relates H (kJ/kg) to T(C) and...

A steam trap is a device to purge steam condensate from a system without venting uncondensed steam. In one of the crudest trap types, the condensate collects and raises a float attached to a drain...

An object whose weight 100 lbf experiences a decrease in kinetic energy of 500 ft. lbf and an increase in potential energy of 1500 ft.lbf. The initial velocity and elevation of the object, each...

A steel bar of thickness h is subjected to a bending force F. The vertical support is stepped such that the horizontal welds are b1 and b2 long. Determine F if the maximum allowable shear stress...

Consider a 1000-W iron whose base plate is made of 0.5-cm-thick aluminum alloy 2024-T6 (r = 2770 kg/m3 and cp - 875 J/kg ¢ °C). The base plate has a surface area of 0.03 m2. Initially, the...

A 10-liter cylinder containing oxygen at 175 atm absolute is used to supply O2 to an oxygen tent. The cylinder can be used until its absolute pressure drops to 1.1atm. Assuming a constant temperature...

You are writing energy balances for a compound for which you cannot find heat capacity or latent heat data. All you know about the material are its molecular formula (C7H12N) and that it is a liquid...

A gas mixture contains 10.0 mole% H 2 O (v) and 90.0 mole% N 2 . The gas temperature and absolute pressure at the start of each of the three parts of this problem are 50C and 500 mm Hg. Ideal gas...

A 50.0-mL solution of 0.0319 M benzylamine was titrated with 0.0500 M HCl. Calculate the pH at the following volumes of added acid: Va = 0,12.0, Ve 30.0, Ve, and 35.0 mL.

Air at a free stream temperature of T = 20C is in parallel flow over a flat plate of length L = 5 m and temperature Ts = 90C. However, obstacles placed in the flow intensify mixing with increasing...

Air at 27C with a free stream velocity of 10 m/s is used to cool electronic devices mounted on a printed circuit board. Each device, 4 mm by 4 mm, dissipates 40 mW, which is removed from the top...

Determine the force in each member of the space truss and state if the members are in tension or compression. The truss is supported by short links at A, B, and C. Given: a = 4 ft b = 2 ft c = 3 ft d...

A fuel gas containing methane and ethane is burned with air in a furnace, producing a stack gas at 300C and 105 kPa (absolute). The stack gas contains CO 2 at a partial pressure of 80 mm Hg and no...

By inspection determine which of the following process models can be approximated reasonably accurately by a first-order-plus-time-delay model. For each acceptable case, give your best estimate of ?...

A concrete wall, which has a surface area of 20 m 2 and is 0.30 m thick, separates conditioned room air from ambient air. The temperature of the inner surface of the wall is maintained at 25C, and...

The mechanical properties of aluminum may be improved by incorporating fine particles of aluminum oxide (Al2O3). Given that the moduli of elasticity of these materials are, respectively, 69 GPa (10 (...

A 1.509-g sample of a Pb/Cd alloy was dissolved in acid and diluted to exactly 250.0 mL in a volumetric flask. A 50.00-mL aliquot of the diluted solution was brought to a pH of 10.0 with a NH4+/NH3...

Determine the forces P1 and P2 needed to hold the cable in the position shown, i.e., so segment C D remains horizontal. Also, find the maximum tension in thecable. 15 m Im 5 KN 12m

Consider proportional-only control of the stirred-tank heater control system in Figure. The temperature transmitter has a span of 50F and a zero of 55 F. The nominal design conditions are T = 80 F...

Determine the horizontal and vertical components of force that the pins at A, B, and C exert on their connecting members. Units Used: kN = 103 N Given: F = 800 N a = 1 m r = 50 mm b = 0.2 m B C

Determine the distance d for placement of the load P for equilibrium of the smooth bar in the position as shown. Neglect the weight of the bar. R P. A,

Determine the magnitude and direction of the smallest force F3 so that the resultant force of all three forces has a magnitude of 20lb. F = 10 lb F = 5 lb

The wing of the jet aircraft is subjected to thrust T from its engine and the resultant lift force L. If the mass of the wing is M and the mass center is at G, determine the x, y, z components of...

Methanol is produced by reacting carbon monoxide and hydrogen. A fresh feed stream containing CO and H 2 joins a recycle stream and the combined stream is fed to a reactor. The reactor outlet stream...

A frame ABC is supported in part by cable DBE which passes through a frictionless ring at B. Determine the magnitude and direction of the resultant of the forces exerted by the cable at B knowing...

The car rests on four scales and in this position the scale readings of both the front and rear tires are shown by FA and FB. When the rear wheels are elevated to a height of 3 ft above the front...

Solve Prob. 452 using Castiglianos theorem. Prob. 452, The figure illustrates a stepped torsion-bar spring OA with an actuating cantilever AB. Both parts are of carbon steel. Use superposition and...

A gaseous fuel with 80 percent CH4, 15 percent N2, and 5 percent O2 (on a mole basis) is burned with dry air that enters the combustion chamber at 25°C and 100 kPa. The volumetric analysis of the...

A stream of hot dry nitrogen flows through a process Unit that contains liquid acetone. A substantial portion of the acetone vaporizes and is carried off by the nitrogen. The combined gases leave the...

Consider a blending tank that has the same dimensions and nominal flow rates as the storage tank in Exercise 2.13 but incorporates a valve on the outflow line that is used to establish flow rate w3....

Interrelation of slit and annulus formulas, when an annulus is very thin, it may, to a good approximation, is considered as a thin slit. Then the results of Problem 2B.3 can be taken over with...

The off-gas from a reactor in a process plant in the heart of an obscure banana republic has been condensing and plugging up the vent line, causing a dangerous pressure buildup in the reactor. Plans...

Saturated process steam at 1 atm is condensed in a shell-and-tube heat exchanger (one shell, two tube passes). Cooling water enters the tubes at 15C with an average velocity of 3.5 m/s. The tubes are...

A zirconia-based ceramic has the spectral, hemispherical emissivity shown below and is being considered for use as the filament of a light bulb. (a) What is the total, hemispherical emissivity of a...

A natural gas containing 82.0 mole% CH4 and the balance C2H6 is burned with 20% excess air in a boiler furnace. The fuel gas enters the furnace at 298 K, and the air is preheated to 423 K. The heat...

Determine the magnitude and direction, measured counterclockwise from the positive x' axis, of the resultant force of the three forces acting on the bracket. Given: F1 = 300 N F2 = 200 N F3 = 180 N...

A small radiant heat source of area A1 = 2 x 10-4 m2 emits diffusely with an intensity I1 = 1000 W/m2 ? sr. A second small area, A2 = 1 x 10-4 m2, is located as shown in the sketch. (a) Determine the...

Resolve the force F1, into components acting along the u and v axes and determine the magnitudes of thecomponents. 70 30 45 F= 300 N F= S00 N

The small turbine in Fig P6.76 extracts 400 W of power from the water flow. Both pipes are wrought iron. Compute the flow rate Q m3/h. Sketch the EGL and HGL accurately. Water 20 m 20. Turbine 30 m...

A 0.8-m3 insulated rigid tank contains 1.54 kg of carbon dioxide at 100 kPa. Now paddle wheel work is done on the system until the pressure in the tank rises to 135 kPa. Determine (a) The actual...

Water enters a tube at 27C with a flow rate of 450 kg/h. The heat transfer from the tube wall to the fluid is given as q' s (W/m) = a x, where the coefficient a is 20 W/m 2 and x (m) is the axial...

(a) Using the ionic radii in Table 12.3, compute the theoretical density of CsCl. (b) The measured density is 3.99 g/cm 3 . How do you explain the slight discrepancy between your calculated value and...

A chemostat is a continuous stirred tank bioreactor that can carry out fermentation of a plant cell culture. Its dynamic behavior can be described by the following equations: X = ?(S)X ? DX S = ?...

A thermocouple junction is inserted in a large duct to measure the temperature of hot gases flowing through the duct. (a) If the duct surface temperature Ts is less than the gas temperature T g ,...

Calculate the following: (a) The bubble-point temperature of an Equimolar mixture of liquid n-hexane and n-heptanes at 1.0 atm and the composition (mole fractions) of the vapor in equilibrium with...

An opaque, horizontal plate has a thickness of L = 21 mm and thermal conductivity k = 25 W/m K. Water flows adjacent to the bottom of the plate and is at a temperature of T,w = 25C. Air flows above...

Determine the maximum weight of the bucket that the wire system can support so that no single wire develops a tension exceeding 100lb. 30 30

Assume that four electrons are confined to a one-dimensional box 5.64 10-10 m in length. If two electrons can occupy each allowed energy level, calculate the wavelength of electromagnetic radiation...

A square (10 mm x 10 mm) silicon chip is insulated on one side and cooled on the opposite side by atmospheric air in parallel flow at U = 20 m/s and T = 24C. When in use, electrical power...

A sample of LSD (d- lysergic acid diethylamide, C 24 H 30 N 3 O) is added to some table salt (sodium chloride) to form a mixture. Given that a 1.00- g sample of the mixture undergoes combustion to...

Plot the force vs. reduction in height curve in open-die forging of a solid cylindrical, annealed copper specimen 2 in. high and 1 in. in diameter, up to a reduction of 70%, for the cases of (a) No...

The figure shows a formed round-wire cantilever spring subjected to a varying force. The hardness tests made on 25 springs gave a minimum hardness of 380 Brinell. It is apparent from the mounting...

Use Hesss law to calculate the standard heat of the water-gas shift reaction CO (g) + H 2 O (v) CO 2 (g) + H 2 (g) from each of the two sets of data given here. (a) CO (g) + H 2 O (l) CO 2 (g) + H...

An air-to-water compact heat exchanger is to be designed to serve as an intercooler for a 5,000 hp gas turbine plant. The exchanger is to meet the following heat transfer and pressure drop...

At the instant shown, slider block B is moving to the right with a constant acceleration, and its speed is 6 in./s. Knowing that after slider block A has moved 10 in. to the right its velocity is 2.4...

When the pump in Fig P3.130 draws 220 m3/h of water at 20°C from the reservoir, the total friction head loss is 5 m. The flow discharges through a nozzle to the atmosphere Estimate the pump power...

A four-cylinder, four-stroke, 2.2-L gasoline engine operates on the Otto cycle with a compression ratio of 10. The air is at 100 kPa and 60C at the beginning of the compression process, and the...

A piece of plywood in which several holes are being drilled successively has been secured to a workbench by means of two nails. Knowing that the drill exerts a 12 N m ⋅ couple on the piece of...

A salt-gradient solar pond is a shallow body of water that consists of three distinct fluid layers and is used to collect solar energy. The upper- and lower-most layers are well mixed and serve to...

A gas containing methane, ethane, and carbon dioxide is analyzed with a gas chromatograph (GC) and flame ionization detector (FID): the GC separates the components of the gas and the FID registers...

Bioreactions are often carried out in batch reactors. The fed-batch bioreactor model in Section 2.4.9 is also applicable to batch reactors if the feed flow rate F is set equal to zero. Using the...

Replace the loading system acting on the post by an equivalent resultant force and couple moment at point P. Given: F1 = 30 lb F2 = 40 lb F3 = 60 lb a = 1 ft b = 3 ft c = 2 ft d = 3 e = 4 F2

An electric resistance heater is embedded in a long cylinder of diameter 30 mm. When water with a temperature of 25C and velocity of 1 m/s flows crosswise over the cylinder, the power per unit length...

A PAM telemetry system involves the multiplexing of four input signals: s i (t), i = 1, 2 3, 4. Two of the signals s 1 (t) and s 2 (t) have bandwidths of 80 Hz each, whereas the remaining two signals...

Suppose the welded steel bracket shown in the figure is bolted underneath a structural-steel ceiling beam to support a fluctuating vertical load imposed on it by a pin and yoke. The bolts are in...

The density and specific heat of a plastic material are known (p = 950 kg/m 3 , c p = 1100 J/kg K), but its thermal conductivity is unknown. To determine the thermal conductivity, an experiment is...

Isooctane is produced in the reaction of isobutene and butylene in an emulsion with concentrated sulfuric acid: i-C 4 H 10 + C 4 H 8? ? i-C 8 H 18 The fresh feed to the process flows at a rate of...

A 32-lb motor is mounted on the floor. Find the resultant of the weight and the forces exerted on the belt, and determine where the line of action of the resultant intersects the floor. A in. 2 in

An insulated vertical pistoncylinder device initially contains 0.2 m3 of air at 200 kPa and 22°C. At this state, a linear spring touches the piston but exerts no force on it. The cylinder is...

Experiments have been conducted to determine local heat transfer coefficients for flow perpendicular to a long, isothermal bar of rectangular cross section. The bar is of width c, parallel to the...

A 30-liter cylinder is evacuated and filled with 5.00 kg of a gas containing 10.0 mole% N2O and the balance N2. The gas temperature is 24C. Use the compressibility chart to solve the following...

The rod assembly is used to support the 250-lb cylinder. Determine the components of reaction at the ball-and socket joint A, the smooth journal bearing E, and the force developed along rod CD. The...

Use the generalized compressibility chart to estimate z for (a) Nitrogen at 40C and 40MPa and (b) Helium at 200C and 350 atm. (Dont forget Newtons corrections.)

The standard heat of the combustion reaction of Liquid n-hexane to form CO2 (g) and H2O (l), with all reactants and products at 77F and I atm, is H = 1.791 x 106 Btu/lb-mole. The heat of vaporization...

List the four steps that are necessary to run a program on a completely dedicated machine.

A 20 wt% solution of uranyl nitrate (UN) in water is to be treated with tributyl phosphate (TBP) to remove 90% of the uranyl nitrate. All operations are to be batchwise equilibrium contacts. Assuming...

A steel spur pinion has a pitch of 6 teeth/in, 22 full-depth teeth, and a 20 pressure angle. The pinion runs at a speed of 1200 rev/min and transmits 15 hp to a 60-tooth gear. If the face width is 2...

By driving a truck over a scale, it was determined that the loads on the front and rear axles are 18 kN and 12 kN, respectively, when the truck is empty. Determine the weight and the location of the...