Steam at 400C has a specific volume of 0.02 m3/kg determine the pressure of the steam based on (a) The ideal gas equation, (b) The generalized compressibility chart, and (c) The steam tables.

Consider the arrangement of the three black surfaces shown, where A 1 is small compared to A 2 or A 3 . Determine the value of F 13 . Calculate the net radiation heat transfer from A 1 to A 3 if A 1...

When a man returns to his well-sealed house on a summer day, he finds that the house is at 32°C. He turns on the air conditioner, which cools the entire house to 20°C in 15 min. If the COP of...

A seed crystal of diameter D (mm) is placed in a solution of dissolved salt, and new crystals are observed to nucleate (form at a constant rate r (crystals/min). Experiments with speed crystals of...

The power spectral density of a random process X (t) is shown in Figure. It contains of a delta function at f = 0 and a triangular component. (a) Determine and sketch the autocorrelation function RX...

Assume that a Pitot tube is inserted into the test-section flow of the wind tunnel in Prob. 3.4. The tunnel test section is completely sealed from the outside ambient pressure. Calculate the pressure...

Steam enters an adiabatic turbine at 8 MPa and 500°C with a mass flow rate of 3 kg/s and leaves at 30 kPa. The isentropic efficiency of the turbine is 0.90. Neglecting the kinetic energy change...

A concentration C (mol/L) varies with time (min) according to the equation C = 3.00 exp ( 2.00t) (a) What are the units of 3.00 and 2.00? (b) Suppose the concentration is measured at t = 0 and t = 1...

The shear shown is used to cut and trim electronic-circuit-board laminates. Knowing that the coefficient of kinetic friction between the blade and the vertical guide is 0.20, determine the force...

A load Q is applied to the pulley C, which can roll on the cable ACB. The pulley is held in the position shown by a second cable CAD, which passes over the pulley A and supports a load P. Knowing...

Checking solutions to unsteady flow problems (a) Verify the solutions to the problems in Examples 4.1-1, 2, and 3 by showing that they satisfy the partial differential equations, initial conditions,...

Methanol is to be delivered to a process unit at a rate of 15.0k mol/h by a stream that is 30.0 mole% methanol and 70.0mole% propane. Estimate the volumetric flow rate of this stream at 10.0 atm and...

The spectral emissivity of an opaque, diffuse surface is as shown. (a) If the surface is maintained at 1000 K, what is the total, hemispherical emissivity? (b) What is the total, hemispherical...

A 15-mm-diameter steel bar is to be used as a torsion spring. If the torsional stress in the bar is not to exceed 110 MPa when one end is twisted through an angle of 30, what must be the length of...

The horizontal nozzle in Fig P3.49 has D1 = 12 in, D2 = 6 in, with p1 = 38 psia and V2 = 56 ft/s. For water at 20°C, find the force provided by the flange bolts to hold the nozzle fixed. P15...

Utility pole BC is guyed by cable AB as shown. Knowing that the magnitude of the force exerted by the cable at B is 70 lb and that the moment of that force about the x axis is 763 lb −...

Knowing that crank AB rotates about point A with a constant angular velocity of 900 rpm clockwise, determine the acceleration of the piston P when = 120?. GIN.

The floor beams AB and BC are stiffened using the two tie rods CD and AD. Determine the force along each rod when the floor beams are subjected to a uniform load w. Assume the three contacting...

Gate AB is 7 ft into the paper and weighs 3000 lbf when submerged. It is hinged at B and rests against a smooth wall at A. Find the water level h which will just cause the gate to open. 2 4 ft Water...

Consider a flow with a pressure and temperature of 1atm and 288 K. A Pitot tube is inserted into this flow and measures a pressure of 1.555 atm. What is the velocity of the flow?

The end of a cylindrical liquid cryogenic propellant tank in free space is to be protected from external (solar) radiation by placing a thin metallic shield in front of the tank. Assume the view...

A mixture of acetone and isopropanol containing 50 mol% acetone is to be distilled continuously to produce an overhead product containing 80 mol% acetone and a bottoms containing 25 mol% acetone. If...

Magnesium oxide has the rock salt crystal structure and a density of 3.58 g/cm 3 . (a) Determine the unit cell edge length. (b) How does this result compare with the edge length as determined from...

Using atomic weight, crystal structure, and atomic radius data tabulated inside the front cover, compute the theoretical densities of lead, chromium, copper, and cobalt, and then compare these values...

The drug Librium gives a polarographic wave with E 1/2 = - 0.265 V (versus S.C.E.) in 0.05 M H 2 SO 4 . A 50.0-mL sample containing Librium gave a wave height of 0.37 A. When 2.00 mL of 3.00 mM...

A 2-m3 rigid insulated tank initially containing saturated water vapor at 1 MPa is connected through a valve to a supply line that carries steam at 400°C. Now the valve is opened, and steam is...

Water is to be pumped from a lake to a ranger station on the side of a mountain (see figure). The flow rate is to be 95gal/mm, and the flow channel is a standard 1-in. Schedule 40 steel pipe (ID =...

The pole for a power line is subjected to the two cable forces of 60 lb, each force lying in a plane parallel to the x ? y plane. If the tension in the guy wire AB is 80 lb, determine the x, y, z...

The proposed design for an anemometer to determine the velocity of an airstream in a wind tunnel is comprised of a thin metallic strip whose ends are supported by stiff rods serving as electrodes for...

State whether you would use Raoults law or Henrys law to perform vaporliquid equilibrium calculations for each component in the following liquid mixtures: (a) Water and dissolved nitrogen; (b)...

(a) What is crystallization? (b) Cite two properties that may be improved by crystallization.

In 1775, Dr. William Cullen made ice in Scotland by evacuating the air in a water tank. Explain how that device works, and discuss how the process can be made more efficient.

If laminar flow is induced at the surface of a disk due to rotation about its axis, the local convection coefficient is known to be a constant, h = C, independent of radius. Consider conditions for...

The CdSe content (g/L) of nanocrystals was measured by two methods for six different samples. Do the two methods differ significantly at the 95% confidence level? Method 1 Anodic stripping 0.88 1.15...

A rigid tank initially contains 1.4-kg saturated liquid water at 200°C. At this state, 25 percent of the volume is occupied by water and the rest by air. Now heat is supplied to the water until...

An electronic device dissipating 30 W has a mass of 20 g and a specific heat of 850 J/kg C. The device is lightly used, and it is on for 5 min and then off for several hours, during which it cools...

A vertical, double-pane window, which is I m on a side and has a 25-mm gap filled with atmospheric air, separates quiescent room air at T ,o = 20C from quiescent ambient air at T ,o = - 20C....

The front door of a dishwasher of width 580 mm has a vertical air vent that is 500 mm in height with a20-mm spacing between the inner tub operating at 52C and an outer plate that is thermally...

Air at 80 kPa and 127C enters an adiabatic diffuser steadily at a rate of 6000 kg/h and leaves at 100 kPa. The velocity of the air stream is decreased from 230 to 30 m/s as it passes through the...

A circular pipe of 25-mm outside diameter is placed in an airstream at 25C and l-atm pressure. The air moves in cross flow over the pipe at 15 m/s, while the outer surface of the pipe is maintained...

A billet of stainless steel, AISI 316, with a diameter of 150 mm and a length of 500 mm emerges from a heat treatment process at 200C and is placed in an unstirred oil bath maintained at 20C. (a)...

A reboiled stripper as shown in Figure is to be designed for the task shown. Determine(a) The number of variables.(b) The number of equations relating the variables.(c) The number of degrees of...

A spherical interplanetary probe of 0.5-m diameter contains electronics that dissipate 150 W. If the probe surface has an emissivity of 0.8 and the probe does not receive radiation from other...

A spring scale A and a lever scale B having equal lever arms are fastened to the roof on an elevator, and identical packages are attached to the scales as shown. Knowing that when the elevator moves...

A differential band brake is used to control the speed of a drum which rotates at a constant speed. Knowing that the coefficient of kinetic friction between the belt and the drum is 0.30 and that a...

A tantalum rod of diameter 3 mm and length 120 mm is supported by two electrodes within a large vacuum enclosure. Initially the rod is in equilibrium with the electrodes and its surroundings, which...

The double toggle mechanism shown is used in a punching machine. Knowing that links AB and BC are each of length 150 mm and that M = 75 N m, determine the angle if the system is in equilibrium. 120...

At temperatures near room temperature, the temperature dependence of the conductivity for intrinsic germanium is found to equal where C is a temperature-independent constant and T is in Kelvins....

An experimental arrangement for measuring the thermal conductivity of solid materials involves the use of two long rods that are equivalent in every respect, except that one is fabricated from a...

A tubular heater with a black inner surface of uniform temperature T s = 1000 K irradiates a coaxial disk. (a) Determine the radiant power from the heater which is incident on the disk, q s?1 . What...

A long cylindrical heater element of diameter D = 10 mm, temperature T 1 = 1500 K, and emissivity ? 1 = 1 is used in a furnace. The bottom area A 2 is a diffuse gray surface with ? 2 = 0.6 and is...

A quartz window of thickness L serves as a viewing port in a furnace used for annealing steel. The inner surface (x = 0) of the window is irradiated with a uniform heat flux q;: due to emission from...

Consider a horizontal flat roof section having the same dimensions as a vertical wall section. For both sections, the surfaces exposed to the air gap are at 18C (inside) and -10 o C (outside). (a)...

Blood plasma proteins of patients with malignant breast tumors differ from proteins of healthy people in their solubility in the presence of various polymers. When the polymers dextran and...

The extension spring shown in the figure has full-twisted loop ends. The material is AISI 1065 OQ&T wire. The spring has 84 coils and is close-wound with a preload of 16 lbf. (a) Find the closed...

Two traffic signals are temporarily suspended from a cable as shown. Knowing that the signal at B weighs 300 N, determine the weight of the signal at C. 4.0 m

Carbon monoxide is burned with excess air at 1 atm in an adiabatic reactor. The reactants are fed at 25C and the final temperature (i.e., the adiabatic flame temperature) is 1400C. (a) Calculate the...

The figure shows a schematic drawing of a vehicular jack that is to be designed to support a maximum mass of 300 kg based on the use of a design factor nd = 3.50. The opposite-handed threads on the...

A long pyroceram rod of diameter 20 mm is clad with a very thin metallic tube for mechanical protection. The bonding between the rod and the tube has a thermal contact resistance of R t.c = 0.12 m ...

Experimental measurements of Vaughan and Collins [Ind. Eng. Chem., 34,885 (1942)] for the propane-isopentane system at 167F and 147 psia show for propane a liquid-phase mole fraction of 0.2900 in...

The cantilevered handle in Prob. 384 is made from mild steel. Let Fy = 250 lbf and Fx = Fz = 0. Using Castiglianos theorem, determine the vertical deflection (along the y axis) at the tip. Repeat the...

An ideal gas. Cp = (7 / 2) R and Cv = (5 / 2) R, undergoes a cycle consisting of the following mechanically reversible steps: An adiabatic compression from P1, V1. T1 to P2, V2, T2. An isobaric...

Superheated water vapor at 180 psia and 500F is allowed to cool at constant volume until the temperature drops to 250F. At the final state, determine (a) The pressure, (b) The quality, and (c) The...

Steam enters a nozzle with a low velocity at 150C and 200 kPa, and leaves as a saturated vapor at 75 kPa. There is a heat transfer from the nozzle to the surroundings in the amount of 26 kJ for every...

Entrance flow in conduits (a) Estimate the entrance length for laminar flow in a circular tube. Assume that the boundary-layer thickness S is given adequately by Eq. 4.4-17, with v of the flat-plate...

A paddle wheel stirs a water tank at 500 rpm. The torque transmitted by the shaft is 20 N-m. At the same time an internal electric resistance heater draws 2 Amps of current from a 110 V source as it...

For beam AB, (a) Draw the shear and bending-moment diagrams, (b) Determine the location and magnitude location of the maximum absolute value of the bending moment. I kipvft 1 kip E. 2 kips -12 ft- 8...

A rectangular tetrahedron has six edges of length a. A force P is directed as shown along edge BC. Determine the moment of P about edge OA.

When the couple M is applied to the link in a mechanism, the resulting forces exerted on the link from a guide and the connecting links are as shown. Determine (a) The values of M and α so that...

A silicon chip of thickness L = 2.5 mm and thermal conductivity ks = 135 W/m K is cooled by boiling a saturated fluorocarbon liquid (T sat = 57C) on its surface. The electronic circuits on the...

Relatively pure oxygen and nitrogen can be obtained by the distillation of air using the Linde double column, which, as shown in Figure, consists of a lower column operating at elevated pressure...

Atmospheric air at 35C flows steadily into an adiabatic saturation device and leaves as a saturated mixture at 25C. Makeup water is supplied to the device at 25C. Atmospheric pressure is 98 kPa....

The oscillation of rod OA about O is defined by the relation ( = 4/)(sin t), where and t are expressed in radians and seconds, respectively. Collar B slides along the rod so that its distance from O...

N-Pentane is burned with excess air in a continuous combustion chamber. (a) A technician runs an analysis and reports that the product gas contains 0.270 mole% pentane. 5.3% oxygen, 9.1% carbon...

It is necessary to select a ceramic material to be stressed using a three-point loading scheme (Figure). The specimen must have a circular cross section and a radius of 2.5 mm (0.10 in.), and must...

A gas chromatograph (GC) is a device used to separate the components of a sample of a gas or liquid mixture and to provide a measure of the amount of each component in the sample. The output from a...

In the engine system shown l = 10 in. and b = 4 in. The connecting rod BD is assumed to be a 3-lb uniform slender rod and is attached to the 4.5-lb piston P. During a test of the system, crank AB is...

Consider a well-insulated horizontal rigid cylinder that is divided into two compartments by a piston that is free to move but does not allow either gas to leak into the other side. Initially, one...

Chain AB supports a horizontal, uniform steel beam having a mass per unit length of 85 kg/m. If the maximum tension in the cable is not to exceed 8kN, determine (a) The horizontal distance a from A...

A binary geothermal power plant uses geothermal water at 160°C as the heat source. The cycle operates on the simple Rankine cycle with isobutane as the working fluid. Heat is transferred to the...

A hollow spherical iron container whose outer diameter is 20 cm and thickness is 0.4 cm is filled with iced water at 0°C. If the outer surface temperature is 5°C, determine the approximate...

Draw the free-body diagram of member AB, which is supported by a roller at A and a pin at B. Explain the significance of each force on the diagram. (SeeFig) 390 Ib 800 Ib ft -4 8 ft t- 3 ft 30

A 4-L pressure cooker has an operating pressure of 175 kPa. Initially, one-half of the volume is filled with liquid and the other half with vapor. If it is desired that the pressure cooker not run...

A simplified representation for cooling in very large-scale integration (VLSI) of microelectronics is shown in the sketch. A silicon chip is mounted in a dielectric substrate, and one surface of the...

In the engine system shown, l = 8 in. and b = 3 in. Knowing that the crank AB rotates with a constant angular velocity of 1000 rpm clockwise, determine the velocity of piston P and the angular...

Insulating power of a wall (Fig. 10A.6), the "insulating power" of a wall can be measured by means of the arrangement shown in the figure One places a plastic panel against the wall. In the panel two...

Sulfur dioxide is oxidized to sulfur trioxide in a small pilot-plant reactor. SO 2 and 100% excess air are fed to the reactor at 450C. The reaction proceeds to a 65% SO 2 conversion, and the products...

For the cracking reaction, C3H8(g) C2H4(g) + CH4(g) The equilibrium conversion is negligible at 300 K, but becomes appreciable at temperatures above 500 K. For a pressure of 1 bar, determine: (a)...

A simple surge tank with fixed valve on the outflow Line is illustrated in figure. If the outflow rate is proportional to the square root of the liquid height, an unsteady-state model for the level...

Solve Prob. 415 using Castiglianos theorem. Prob. 415, The cantilever shown in the figure consists of two structural-steel channels size 3 in, 5.0 lbf/ft. Using superposition, find the deflection at...

The figure shows a finger exerciser used by law-enforcement officers and athletes to strengthen their grip. It is formed by winding A227 hard-drawn steel wire around a mandrel to obtain 2 turns when...

Air enters an adiabatic nozzle at 60 psia, 540F, and 200 ft/s and exits at 12 psia. Assuming air to be an ideal gas with variable specific heats and disregarding any irreversibilities, determine the...

The pendulum consists of two slender rods AB and OC which have a mass density r. The thin plate has a mass density p. Determine the location yc of the center of mass G of the pendulum then calculate...

The evaporator section of a refrigeration unit consists of thin-walled, 10-mm-diarneter tubes through which refrigerant passes at a temperature of - 18C. Air is cooled as it flows over the tubes,...

Consider an oblique shock wave with a wave angle of 30 in a Mach 4 flow. The upstream pressure and temperature are 2.65 x 104 N/m2 and 223.3 K, respectively (corresponding to a standard altitude of...

Methane reacts with chlorine to produce methyl chloride and hydrogen chloride. Once formed, the methyl chloride may undergo further chlorination to form methylenc chloride (CH 2 CI 2 ), chloroform,...

Refrigerant-134a enters the condenser of a residential heat pump at 800 kPa and 35C at a rate of 0.018 kg/s and leaves at 800 kPa as a saturated liquid. If the compressor consumes 1.2 kW of power,...

An electrical heater in the form of a horizontal disk of 400-mm diameter is used to heat the bottom of a tank filled with engine oil at a temperature of 5C. Calculate the power required to maintain...

The entropy increase across a normal shock wave is 199.5 J / (kg K). What is the upstream Mach number?

A plane wall that is insulated on one side (x = 0) is initially at a uniform temperature T i , when its exposed surface at x = L is suddenly raised to a temperature T s ' (a) Verify that the...