Determine Z i , Z o , and A v for the network of Fig. 8.79. Fig. 8.79 +20 V Ipss=9 mA Vp= -4.5 V ra= 40 kQ 10 MQ A Z. 2.2 k2 FIG. 8.79

Why is it not a good idea to use solid solution strengthening as a mechanism to increase the strength of copper for electrical applications?

Determine the components of F that act along rod AC and perpendicular to it. Point B is located at the midpoint of the rod. 6 m 4 m D B F = 600 N 4 m 3 m 4 m

Perfect pitch A recent study of perfect pitch tested 2700 students in American music conservatories. It found that 7% of non-Asian and 32% of Asian students have perfect pitch. A test of the...

Consider the closed-loop system in Figure P5.22, where (a) If = 2.43, determine the value of K such that the steady-state error of the closed-loop system response to a unit step input, is zero. (b)...

The pipe is subjected to the force F, which has components acting F x = 1.5kN and F z = 1.25kN. If = 75, determine the magnitude of F and F y . X F

A scale is constructed with a 4-ft-long cord and the 10-lb block D. The cord is fixed to a pin at A and passes over two small pulleys at B and C. Determine the weight of the suspended block at B if...

Determine the x, y, z components of reaction acting on the ball-and-socket at A, the reaction at the roller B, and the tension in the cord CD required for equilibrium of the plate. X C 40 lb/ft -5...

Calculate the tension in the cable at B required to support the load of 200 kg. The cable passes over a frictionless pulley located at C. Neglect the size of this pulley and weight of the boom. 60 B...

The crane lifts the 400-kg load L. The primary boom AB has a mass of 1.20 Mg and a center of mass at G 1 , whereas the secondary boom BC has a mass of 0.6 Mg and a center of mass at G 2 . Determine...

The crane has a mass of 800 kg and a center of mass at G. The bearing at A is a journal bearing and can support a horizontal force, whereas the bearing at B is a thrust bearing that supports both...

Determine the force in members BC, CF, and FE and state if the members are in tension or compression. G 4 ft B 600 lb -4 ft- E 600 lb -4 ft 4 ft 800 lb

Determine the force in members LK, KC, and CD of the Pratt truss and state if the members are in tension or compression. 3 m A L K B C D E 20 kN 30 kN 40 kN F -2 m--2 m--2 m--2 m--2 m--2 m- G

Determine the force in each member of the truss and state if the members are in tension or compression. Set P 1 = 7 kN, P 2 = 7 kN. AQ P1 -2 m- D P B C 2 m

The tank is used to store a liquid having a specific weight of = 80 lb/ft 3 . If it is filled to the top, determine the magnitude of the resultant force the liquid exerts on side ABEF. 1.5 ft F 2 ft...

The three pin-connected members shown in the top view support a downward force of 60 lb at G. If only vertical forces are supported at the connections B,C,E and at the pad supports A, D, F, determine...

Two 8kg blocks are attached to a cord that passes over two fixed drums. If 3 = 0.3 at the drums, determine the equilibrium angle the cord makes with the horizontal when a vertical force p = 200N is...

Two blocks A and B, each having a mass of 6 kg, are connected by the linkage shown. If the coefficients of static friction at the contacting surfaces are B = 0.8 and A = 0.2, determine the largest...

If the coefficient of static friction at contact points A and B is s = 0.3, determine the maximum force P that can be applied without causing the 100-kg spool to move. A 0.6 m B P 0.9 m Prob. F8-4

The smooth 180-lb pipe has a length of 20 ft and a negligible diameter. It is carried on a truck as shown. If the truck accelerates at a = 5 ft/s 2 , determine the normal reaction at A and the...

The pendulum consists of a plate having a weight of 12 lb and a slender rod having a weight of 4 lb. Determine the radius of gyration of the pendulum about an axis perpendicular to the page and...

At the instant = 30, the frame of the crane is rotating with an angular velocity of = 1.5 rad/s and angular acceleration of = 0.5 rad/s, while the boom AB rotates with an angular velocity of =...

A rotating step shaft is loaded as shown, where the forces F A and FB are constant at 600 lbf and 300 lbf, respectively, and the torque T alternates from 0 to 1800 lbf in. The shaft is to be...

For each following case, express the voltage ratio in decibels: (a) Vin (c) Vin = 1 V, Vout = 1V 10 V, Vout = 7.07 V (b) Vin 5 V, Vout = 3 V (d) Vin=25 V, Vout=5V

A 3 m 3 insulated tank contains steam at 1 bar, 150 C. The tank is connected to a steam line that is maintained at 10 bar, 300 C until the pressure in the tank is 5 bar. How much steam (kg) was...

Methane passes through a compressor and is subsequently cooled in a heat exchanger. Methane enters the compressor at 1 bar, 20 C with volumetric flow rate 30 ft 3 /min; it exits the heat exchanger at...

The composite bar system in Figure 1.48 consists of a steel bar and a bronze bar that are both securely attached to a rigid block and rigid supports. The system is loaded with a total load P at the...

By doing some simple calculations and plotting several graphs, one can verify some of the statements made in this chapter concerning phase equilibrium and phase transitions. All the calculations...

Electrical power is to be produced from a steam turbine connected to a nuclear reactor. Steam is obtained from the reactor at 540 K and 36 bar, the turbine exit pressure is 1.0 bar, and the turbine...

(a) A 3.96 10 4 M solution of compound A exhibited an absorbance of 0.624 at 238 nm in a 1.000-cm cuvet; a blank solution containing only solvent had an absorbance of 0.029 at the same wavelength....

Evaluate the following expressions in MATLAB for the given value of x. Check your answers by hand. a. y = 6x 3 + 4/x, x = 3 b. y = x/4 3, x = 7 c. y = (4x) 2 /25, x = 9 d. y = 2sinx/5, x = 4 e. y =...

A steel cable of diameter 3/16 in. is attached to an eyebolt and tensioned to 500 lb (Figure P5.4, see on page 226). Calculate the stress in the cable, and express it in the dimensions psi, ksi, Pa,...

A front loader of mass 4.5 Mg is shown in side view as it lifts a 0.75-Mg load of gravel (Figure P4.20). (a) Draw a free body diagram of the front loader. (b) Determine the contact forces between the...

A 1-ft-long rod is made from the material of Problem P5.11. By what amount must the rod be stretched from its original length for it to begin yielding? Problem P5.11 Determine the elastic modulus and...

Water flows through a circular pipe having a constriction in diameter from 1 in. to 0.5 in. The velocity of the water just upstream of the constriction is 4 ft/s. By using the result of Problem...

The volume V and surface area A of a sphere of radius r are given by a. Develop a pseudocode description of a program to compute V and A for 0 r 3 m and to plot V versus A. b. Write and run the...

A 3 m thick clay layer (c u = 60 kN/m 2 and = 19.0 kN/m 3 ) is underlain by a weaker clay (c u = 30 kN/m 2 and = 18.0 kN/m 3 ) to a large depth. A 2.0 m wide square foundation is placed at 1.5 m...

A 2 m 2 m foundation carrying a 1000 kN column load is placed at 1.0 m below the ground level in a sand where = 19 kN/m 3 and (N 1 ) 60 = 25. Estimate the settlement using the Berardi and...

A certain spherical street lamp emits light in all directions. It is mounted on a pole of height h (see Figure P23). The brightness B at point P on the sidewalk is directly proportional to sin + and...

The equation for the voltage y across the capacitor of an RC circuit is where (t) is the applied voltage. Suppose that RC = 0.2 s and that the capacitor voltage is initially 2 V. If the applied...

Determine the moment about point A of each of the three forces acting on the beam. F = 375 lb F = 500 lb . 0.5 ft 8 ft 6 ft 5ft- 5 ft- 30 F3 = 160 lb

force F having a magnitude of acts along the diagonal of F = 100N the parallelepiped. Determine the moment of F about point A, using M A = r B F and M A = r C F. 200 mm 400 mm B 600 mm

The plan of a group pile is shown in Figure P12.34. Assume that the piles are embedded in a saturated homogeneous clay having a c u = 90 kN/m 2 . Given: diameter of piles (D) = 316 mm,...

Using Rankines earth pressures and neglecting the passive resistance, determine the factor of safety with respect to sliding and overturning for the gravity retaining wall shown in Figure P17.4. The...

The dimensions of a jib crane, which is manufactured by the Basick Co., are given in the figure. The crane has a mass of 800 kg and a center of mass at G.The bearing at A is a journal bearing and can...

The two blocks used in a measuring device have negligible weight.If the spring is compressed 5 in. when in the position shown, determine the smallest axial force P which the adjustment screw must...

The shelf life of a carbonated beverage is of interest. Ten bottles are randomly selected and tested, and the following results are obtained: Days 108 138 124 163 124 159 106 134 115 139 (a) We would...

Select a mechanical component from Part 3 of this book (roller bearings, springs, etc.), go to the Internet, and, using a search engine, report on the information obtained on five manufacturers or...

Go to the Internet and connect to the NSPE website (www.nspe.org/ethics). Read the history of the Code of Ethics and briefly discuss your reading.

Air is compressed by an adiabatic compressor from 100 kPa and 20C to 1.8 MPa and 400C. Air enters the compressor through a 0.15-m 2 opening with a velocity of 30 m/s. It exits through a 0.08-m 2...

Several ovens in a metal working shop are used to heat metal specimens. All the ovens are supposed to operate at the same temperature, although it is suspected that this may not be true. Three ovens...

In the central composite design of Problem 11-14, two responses were obtained, the mean and variance of an oxide thickness. Use the Box-Cox method to investigate the potential usefulness of...

A round cold-drawn 1045 steel rod has a mean strength S y = 95.5 kpsi with a standard deviation of = 6.59 kpsi. The rod is to be subjected to a mean static axial load of P = 65 kip with a standard...

Saturated water vapor at 40C is to be condensed as it flows through a tube at a rate of 0.20 kg/s. The condensate leaves the tube as a saturated liquid at 40C. The rate of heat transfer from the tube...

Repeat Prob. 51 by first plotting the failure loci in the A , B plane to scale; then, for each stress state, plot the load line and by graphical measurement estimate the factors of safety. A...

Moist air is passed through a cooling section where it is cooled and dehumidified. How do (a) The specific humidity (b) The relative humidity of air change during this process?

An AISI 4142 steel Q&T at 800F exhibits S yt = 235 kpsi, S yc = 285 kpsi, and f = 0.07. For the given state of plane stress, (a) Determine the factor of safety, (b) Plot the failure locus and the...

Steam enters a converging nozzle at 5.0 MPa and 400C with a negligible velocity, and it exits at 3.0 MPa. For a nozzle exit area of 75 cm 2 , determine the exit velocity, mass flow rate, and exit...

The pressure in a natural gas pipeline is measured by the manometer shown in Fig. P167E with one of the arms open to the atmosphere where the local atmospheric pressure is 14.2 psia. Determine the...

The force generated by a spring is given by F = kx, where k is the spring constant and x is the deflection of the spring. The spring of Fig. P199 has a spring constant of 8 kN/cm. The pressures are P...

Name three applications for feedback control systems.

For the combined translational and rotational system shown in Figure P2.28, find the transfer function, G(s) = X(s)/T(s). J= 3 kg-m? B Radius = 2 m 1 N-m-s/rad TO) N = 10 A 3 kg-m2 N2 = 20 N4 = 60...

Given the rotational system shown in Figure P2.26, find the transfer function, G(s) = 6 (s)/ 1 (s). J1, D N2 K1 Na Jz D N4 J6 Js 000 D K2 FIGURE P2.26

A rigid tank contains 7.5 kg of saturated water mixture at 400 kPa. A valve at the bottom of the tank is now opened, and liquid is withdrawn from the tank. Heat is transferred to the steam such that...

On a summer day in New Orleans, Louisiana, the pressure is 1 atm: the temperature is 32C; and the relative humidity is 95 percent. This air is to be conditioned to 24C and 60 percent relative...

Write, but do not solve, the equations of motion for the translational mechanical system shown in Figure P2.15. x3(1) K = 5 N/m M3 = 5 kg: fvz = 3 N-s/m fv, = 2 N-s/m- K2 = 4 N/m ML=4 kg: 0000M2 = 5...

Find the transfer function, G(s) = V o (s)/Vi(s), for each operational amplifier circuit shown in Figure P2.8. 110 k2 4 F (1ya 400 k2 4 F (a) 110 k2 HE 600 k2 4 F 400 k2 4 F 600 k2 (b) FIGURE P2.8...

Using the Laplace transform pairs of Table 2.1 and the Laplace transform theorems of Table 2.2, derive the Laplace transforms for the following time functions: a. e -at sin t u(t) b. e -at cos t u(t)...

For the unity feedback system of Figure P8.3, where sketch the root locus and find the following: a. The breakaway and break-in points b. The j-axis crossing c. The range of gain to keep the system...

Determine your mass in slugs. Convert your weight to newtons and calculate the corresponding mass in kilograms.

Refer to the Centers for Disease Control study of sanitation levels for 186 international cruise ships, Exercise 2.19. (Recall that sanitation scores ranged from 0 to 100.) Find and interpret...

A golf ball is launched with the initial conditions shown in the figure. Determine the radius of curvature of the trajectory and the time rate of change of the speed of the ball (a) just after launch...

At the instant illustrated, car B has a speed of 30 km/h and car A has a speed of 40 km/h. Determine the values of r and for this instant where r and are measured relative to a longitudinal axis...

A man pulls himself up the 15 incline by the method shown. If the combined mass of the man and cart is 100 kg, determine the acceleration of the cart if the man exerts a pull of 175 N on the rope....

The speed of a car increases uniformly with time from 50 km/h at A to 100 km/h at B during 10 seconds. The radius of curvature of the hump at A is 40 m. If the magnitude of the total acceleration of...

At a certain instant, the 80-lb crate has a velocity of 30 ft /sec up the 20 incline. Calculate the time t required for the crate to come to rest and the corresponding distance d traveled. Also,...

The position s of a particle along a straight line is given by s = 8e 0.4t 6t + t 2 , where s is in meters and t is the time in seconds. Determine the velocity v when the acceleration is 3 m/s 2 .

The small cart has a speed v A = 4 m /s as it passes point A. It moves without appreciable friction and passes over the top hump of the track. Determine the cart speed as it passes point B. Is...

When the 10-lb plunger is released from rest in its vertical guide at = 0, each spring of stiffness k = 20 lb /in. is uncompressed. The links are free to slide through their pivoted collars and...

The particle of mass m is launched from point O with a horizontal velocity u at time t = 0. Determine its angular momentum HO relative to point O as a function of time. m y L--x

The circular sector rotates about a fixed axis through point O with angular velocity = 2 rad/s and angular acceleration = 4 rad/s 2 with directions as indicated in the figure. Determine the...

A coil of heavy flexible cable with a total length of 100 m and a mass of 1.2 kg/m is to be laid along a straight horizontal line. The end is secured to a post at A, and the cable peels off the coil...

Refer to the Canadian Journal of Civil Engineering (Jan. 2013) investigation of the use of variable speed limits to control freeway traffic congestion, Exercise 4.9. Recall that the study site was an...

The 9-m steel beam is being hoisted from its horizontal position by the two cables attached at A and B. If the initial angular accelerations of the hoisting drums are a 1 = 0.5 rad/s 2 and a 2 = 0.2...

The disk rotates about a fixed axis through O with angular velocity w = 5 rad/s and angular acceleration a = 3 rad/s 2 at the instant represented, in the directions shown. The slider A moves in the...

The 20-kg wheel has an eccentric mass which places the center of mass G a distance r = 70 mm away from the geometric center O. A constant couple M = 6 N m is applied to the initially stationary...

The uniform slender bar of mass p per unit length is freely pivoted about the y-axis at the clevis, which rotates about the fixed vertical z-axis with a constant angular velocity w. Determine the...

Determine if the unity feedback system of Figure P6.3 with K(s? + 1) G(s) = %3D (s + 1)(s +2)

Plot of the Fermi distribution function at two different temperatures. Calculate the Fermi function at 6.5 eV if E F = 6.25 eV and T = 300 K. Repeat for T =950 K assuming that the Fermi energy does...

Determine the Debye temperature D, Debye wavelength, and the Debye frequency D for diamond given that the lattice constant for this material is 3.56 , the density of diamond is 3.52 10 3 kg.m -3 ,...

Find the equilibrium concentration of defects for T = 0, 200, 400, 600, 800, 1000, and 1200 K if the energy to form a defect is 1 eV/atom. Assume A is unity. Graph your results. For T = 1200 K, how...

Give some examples of physical properties that defects can change.

Refer to the Engineering Project Organizational Journal (Vol. 3., 2013) study of how the emotional intelligence of individual team members relates directly to the performance of their team, Exercise...

A U-tube is rotated about one leg, as shown. Before being rotated the liquid in the tube fills 0.25 m of each leg. The length of the base of the U-tube is 0.5 m, and each leg is 0.5 m long. What...

The discharge of water in a 27-cm-diameter pipe is 0.057 m 3 /s. What is the mean velocity?

A shell and tube heat exchanger consists of a one pipe inside another pipe as shown. The liquid flows in opposite directions in each pipe. If the speed and discharge of the liquid is the same in each...

Air enters this square duct at section 1 with the velocity distribution as shown. Note that the velocity varies in the y direction only (for a given value of y, the velocity is the same for all...

A bicyclist is coasting down a hill with a slope of 4 into a headwind (measured with respect to the ground) of 7 m/s. The mass of the cyclist and bicycle is 80 kg, and the coefficient of rolling...

Water (10C) is flowing at a rate of 0.35 m 3 /s, and it is assumed that h L = 2V 2 /2g from the reservoir to the gage, where V is the velocity in the 30 cm pipe. What power must the pump supply?...

Consider a closed vessel of fixed volume containing equal masses of water, ethanol, and toluene at 70C. Three phases (two liquid and one vapor) are present. (a) How many variables, in addition to the...