In the following chapter, enzyme catalysis reactions will be extensively reviewed. The first step in these reactions involves the binding of a reactant molecule (referred to as a substrate) to a...

Reactions involving hydroxyl radical (OH) are extremely important in atmospheric chemistry. The reaction of hydroxyl radical with molecular hydrogen is as follows: OH (g) + H 2 (g) H 2 O(g) + H ...

Determine the resultant internal loadings acting on the cross section at point E of the handle arm, and on the cross section of the short link BC. 120 N 50 mm 60 100 mm 50 mm 100 mm 30 300 mm mm 200

Determine the resultant internal loadings acting on the cross section at point C in the beam. The load D has a mass of 300 kg and is being hoisted by the motor M with constant velocity. 2 m- E2 m- -2...

Classify each of the following carbohydrates as an aldose or ketose, and then insert the appropriate term to indicate the number of carbon atoms present (e.g., an aldopentose): (a) (b) (c) (d) (e) H....

The shaft is supported by a smooth thrust bearing at A and a smooth journal bearing at B. Determine the resultant internal loadings acting on the cross section at C. 600 N/m -1 m--1 m---1 m--1.5...

Consider the structures of the following two d-aldotetroses: Each of these compounds exists as a furanose ring, which is formed when the OH at C 4 attacks the aldehyde moiety. Draw each of the...

Consider the structures of the d aldopentoses: (a) Identify the aldopentose that is epimeric with d-arabinose at C2. (b) Identify the aldopentose that is epimeric with d-lyxose at C3. (c) Draw the...

Identify the reagents necessary to make each of the following amino acids using a Strecker synthesis. (a) Methionine (b) Histidine (c) Phenylalanine (d) Leucine

An amidomalonate synthesis was performed using each of the following alkyl halides. In each case, draw and name the amino acid that is produced. (a) Methyl chloride (b) Isopropyl chloride (c)...

Using the data in the following table, calculate the pI of the following amino acids. (a) Aspartic acid (b) Leucine (c) Lysine (d) Proline THE PK,VALUES FOR TWENTY NATURALLY OCCURRING AMINO ACIDS...

The polysulfone block is glued at its top and bottom to the rigid plates. If a tangential force, applied to the top plate, causes the material to deform so that its sides are described by the...

Draw a bond-line structure for each of the following amino acids. (a) l-Leucine (b) l-Tryptophan (c) l-Methionine (d) l-Valine

Which of the following statements applies to triolein? (a) It is a solid at room temperature. (b) It is unreactive toward molecular hydrogen in the presence of Ni. (c) It undergoes hydrolysis to...

Acetal plastic has a stressstrain diagram as shown. If a bar of this material has a length of 3 ft and cross-sectional area of 0.875 in 2 , and is subjected to an axial load of 2.5 kip, determine its...

Identify the repeating unit of the polymer formed from each of the following reactions, and then determine whether the polymer is a chain-growth or a step-growth polymer. (a) (b) (c) NH2 - [] - NH,...

The rigid beam is supported by a pin at C and an A992 steel guy wire AB of length 6 ft. If the wire has a diameter of 0.2 in., determine how much it stretches when a distributed load of w = 200 lb/ft...

When 3-methyl-1-butene is treated with a catalytic amount of BF 3 and H 2 O, a cationic polymerization process occurs, but the expected homopolymer is not formed. Instead, a random copolymer is...

If the gears are subjected to the torques shown, determine the required diameter of the A-36 steel shaft to the nearest mm if Ï allow = 60 MPa. 300 N-m 100 N-m 200 N-m

Consider the structure of the following polymer. (a) Draw the monomers you would use to prepare this polymer. (b) Determine whether this polymer is a step-growth polymer or a chain-growth polymer....

The plastic block is subjected to an axial compressive force of 600 N. Assuming that the caps at the top and bottom distribute the load uniformly throughout the block, determine the average normal...

A steel tube having an outer diameter of 2.5 in. is used to transmit 9 hp when turning at 27 rev/min. Determine the inner diameter d of the tube to the nearest 18 in. if the allowable shear stress is...

The solid shaft is fixed to the support at C and subjected to the torsional loadings. Determine the shear stress at points A and B on the surface, and sketch the shear stress on volume elements...

The 2014-T6 aluminum rod has a diameter of 0.5 in. and is lightly attached to the rigid supports at A and B when T 1 = 70°F. Determine the force P that must be applied to the collar so that, when...

The plug has a diameter of 30 mm and fits within a rigid sleeve having an inner diameter of 32 mm. Both the plug and the sleeve are 50 mm long. Determine the axial pressure p that must be applied to...

The lap joint is connected together using a 1.25 in. diameter bolt. If the bolt is made from a material having a shear stressstrain diagram that is approximated as shown, determine the shear strain...

The rigid beam rests in the horizontal position on two 2014-T6 aluminum cylinders having the unloaded lengths shown. If each cylinder has a diameter of 30 mm, determine the placement x of the applied...

Determine the resultant internal loadings acting on the cross sections at points D and E of the frame. 4 ft 75 Ib/ft LA B. 2 ft 2 ft 1 ft 1 ft 30 1 ft 150 lb

The wires AB and AC are made of steel, and wire AD is made of copper. Before the 150-lb force is applied, AB and AC are each 60 in. long and AD is 40 in. long. If the temperature is increased by 80F,...

The two cylindrical rod segments are fixed to the rigid walls such that there is a gap of 0.01 in. between them when T 1 = 60°F. Each rod has a diameter of 1.25 in. Determine the average normal...

The 2-Mg concrete pipe has a center of mass at point G. If it is suspended from cables AB and AC, determine the average normal stress in the cables. The diameters of AB and AC are 12 mm and 10 mm,...

The solid aluminum shaft has a diameter of 50 mm and an allowable shear stress of Ï allow = 60 MPa. Determine the largest torque T 1 that can be applied to the shaft if it is also subjected to...

Determine the required diameter of the pins at A and B to the nearest 1/16 in. if the allowable shear stress for the material is Ï allow = 6 ksi. Pin A is subjected to double shear, whereas pin...

The connection is made using a bolt and nut and two washers. If the allowable bearing stress of the washers on the boards is (Ï b ) allow = 2 ksi, and the allowable tensile stress within the...

The two aluminum rods AB and AC have diameters of 10 mm and 8 mm, respectively. Determine the largest vertical force P that can be supported. The allowable tensile stress for the aluminum is Ï...

The steel pipe is supported on the circular base plate and concrete pedestal. If the thickness of the pipe is t = 5 mm and the base plate has a radius of 150 mm, determine the factors of safety...

The bar is connected to the support using a pin having a diameter of d = 1 in. If the allowable tensile stress for the bar is (Ï t ) allow = 20 ksi, and the allowable bearing stress between the...

The force applied at the handle of the rigid lever causes the lever to rotate clockwise about the pin B through an angle of 2°. Determine the average normal strain in each wire. The wires are...

The rectangular plate is subjected to the deformation shown by the dashed line. Determine the average shear strain γ xy in the plate. 150 mm 3 mm B I 200 mm A. 3 mm

The square deforms into the position shown by the dashed lines. Determine the shear strain at each of its corners, A, B, C, and D, relative to the x, y axes. Side D' B' remains horizontal. 3 mm D' D...

Determine the shear strain γ xy at corners A and B if the plastic distorts as shown by the dashed lines. 12 mm 4 mm 8 mm 3 mm IB 300 mm 12 mm D. 400 mm- 5 mm

Part of a control linkage for an airplane consists of a rigid member CB and a flexible cable AB. If a force is applied to the end B of the member and causes a normal strain in the cable of 0.004...

The column is constructed from high-strength concrete and eight A992 steel reinforcing rods. If the column is subjected to an axial force of 200 kip, determine the required diameter of each rod so...

The rigid beam is supported at its ends by two A-36 steel tie rods. If the allowable stress for the steel is allow = 16.2 ksi, the load w = 3 kip/ft, and x = 4 ft, determine the smallest diameter of...

The linkage is made of three pin-connected A992 steel members, each having a diameter of 1¼ in. If a horizontal force of P = 60 kip is applied to the end B of member AB, determine the...

The truss is made of three A-36 steel members, each having a cross-sectional area of 400 mm 2 . Determine the magnitude P required to displace the roller to the right 0.2 mm.

The rigid beam is supported at its ends by two A-36 steel tie rods. The rods have diameters d AB = 0.5 in. and d CD = 0.3 in. If the allowable stress for the steel is Ï allow = 16.2 ksi,...

The assembly consists of three titanium (Ti-6A1-4V) rods and a rigid bar AC. The cross-sectional area of each rod is given in the figure. If a force of 60 kip is applied to the ring F, determine the...

The pipe is stuck in the ground so that when it is pulled upward the frictional force along its length varies linearly from zero at B to f max (force/length) at C. Determine the initial force P...

The truss is made of three A-36 steel members, each having a cross-sectional area of 400 mm 2 . Determine the horizontal displacement of the roller at C when P = 8 kN. 5 kN 0.8m 0.8 m. 0,6 m-

The 60-mm-diameter shaft is made of 6061-T6 aluminum. If the allowable shear stress is Ï allow = 80 MPa, and the angle of twist of disk A relative to disk C is limited so that it does not exceed...

The 1-in.-diameter bent rod is subjected to the load shown. Determine the maximum torsional stress in the rod at a section located through A. 3 fr 3 ft 1 ft F = {300 i + 400 j 200 k} lb

The distributed loading is applied to the rigid beam, which is supported by the three bars. Each bar has a cross-sectional area of 0.75 in 2 and is made from a material having a stress strain diagram...

The rigid bar is supported by the two short white spruce wooden posts and a spring. If each of the posts has an unloaded length of 1 m and a cross-sectional area of 600 mm 2 , and the spring has a...

The post is made from 606l-T6 aluminum and has a diameter of 50 mm. It is fixed supported at A and B, and at its center C there is a coiled spring attached to the rigid collar. If the spring is...

The shaft is made of A-36 steel. It has a diameter of 1 in. and is supported by bearings at A and D, which allow free rotation. Determine the angle of twist of gear C with respect to B. B 60 lb-ft 2...

The bronze C86100 pipe has an outer diameter of 1.5 in. and a thickness of 0.125 in. The coupling on it at C is being tightened using a wrench. If the applied force is F = 20 lb, determine the...

The shaft of radius c is subjected to a distributed torque t, measured as torque>length of shaft. Determine the reactions at the fixed supports A and B. to x=to(1 + ()*) 21o 2t0 B.

The two 3-ft-long shafts are made of 2014-16 aluminum. Each has a diameter of 1.5 in. and they are connected using the gears fixed to their ends. Their other ends are attached to fixed supports at A...

The shaft is used to transmit 30 hp while turning at 600 rpm. Determine the maximum shear stress in the shaft. The segments are connected together using a fillet weld having a radius of 0.18 in. 2,5...

The brass wire has a triangular cross section, 2 mm on a side. If the yield stress for brass is t Y = 205 MPa, determine the maximum torque T to which it can be subjected so that the wire will not...

Draw the shear and moment diagrams for the beam, and determine the shear and moment throughout the beam as functions of x for 0 x 6 ft and 6 ft x 10 ft.

Gear B supplies 15 kW of power, while gears A, C and D withdraw 6 kW, 4 kW and 5 kW, respectively. If the shaft is made of steel with the allowable shear stress of Ï allow = 75 MPa, and the...

Draw the shear and moment diagrams for the shaft and determine the shear and moment throughout the shaft as a function of x for 0 ¤ x < 3 ft, 3 ft < x < 5 ft, and 5 ft < x < 6 ft. The bearings...

Express the internal shear and moment in terms of x for 0 ¤ x < L/2, and L/2 < x 6 L, and then draw the shear and moment diagrams. Wo X-

A reinforced concrete pier is used to support the stringers for a bridge deck. Draw the shear and moment diagrams for the pier. Assume the columns at A and B exert only vertical reactions on the...

Determine the placement distance of the roller support so that the largest absolute value of the moment is a minimum. Draw the shear and moment diagrams for this condition. B.

Determine the moment M that will produce a maximum stress of 10 ksi on the cross section. 0.5 in.--3 in- 0.5 in 0.5 in. 3 in. 10 in. H-0.5 in.

Determine the maximum tensile and compressive bending stress in the beam if it is subjected to a moment of M = 4 kip ft. -3 in- 0.5 in.- 0.5 in 3 in. 10 in. D H-0.5 in.

The beam is constructed from four pieces of wood, glued together as shown. If M = 10 kip ft, determine the resultant force this moment exerts on the top and bottom boards of the beam. 1 in. M 8 in. 1...

The beam is made from three boards nailed together as shown. If the moment acting on the cross section is M = 1 kip ft, determine the maximum bending stress in the beam. Sketch a three-dimensional...

The shaft is supported by smooth journal bearings at A and B that only exert vertical reactions on the shaft. If d = 90 mm, determine the absolute maximum bending stress in the beam, and sketch the...

The shaft is supported by a thrust bearing at A and journal bearing at D. If the shaft has the cross section shown, determine the absolute maximum bending stress in the shaft. 40 mm 25 mm D. 0.75 m...

If the beam is made of material having an allowable tensile and compressive stress of (Ï allow ) t = 125 MPa and (Ï allow ) c = 150 MPa, respectively, determine the maximum moment M that...

Determine the absolute maximum bending stress in the beam. Each segment has a rectangular cross section with a base of 4 in. and height of 12 in. 12 kip 2 kip/ft 9 ft -3 ft- 6 ft-

If the allowable bending stress is Ï allow = 6 MPa, determine the minimum dimension d of the beams crosssectional area to the nearest mm. 125 mm 25 mm / 25 mm 75 mm 12 kN 8 kN/m 75 mm B- 2 m- 4m

The beam has a rectangular cross section as shown. Determine the largest intensity w of the uniform distributed load so that the bending stress in the beam does not exceed Ï max = 10 MPa. 50 mm...

The box beam is subjected to a moment of M = 15 kip ft. Determine the maximum bending stress in the beam and the orientation of the neutral axis. y 4 in. 4 in. 6 in. ID -6 in.-

Determine the maximum magnitude of the bending moment M so that the bending stress in the member does not exceed 15 ksi. 4 in. 4 in. 6 in. ID -6 in.-

For the section, I y' = 31.7(10 6 ) m 4 , I z' = 114(10 6 ) m 4 , I y'z' = 15.8(10 6 ) m 4 . Using the techniques outlined in Appendix A, the members cross-sectional area has principal moments of...

Determine the largest shear force V that the member can sustain if the allowable shear stress is Ï allow = 8 ksi. 3 in. 1 in, -3 in. 1 in. 1 in.

The shaft is supported by a thrust bearing at A and a journal bearing at B. If P = 20 kN, determine the absolute maximum shear stress in the shaft. A -1m -1m-

The white spruce beam is reinforced with A-992 steel straps at its center and sides. Determine the maximum stress developed in the wood and steel if the beam is subjected to a bending moment of M z =...

If the wide-flange beam is subjected to a shear of V = 20 kN, determine the sheer force resisted by the web of the beam. 200 mm 20 mm 20 mm B- 300 mm 200 mm 20 mm

If the wide-flange beam is subjected to a shear of V = 20 kN, determine the maximum shear stress in the beam. 200 mm 20 mm 20 mm - 300 mm 200 mm 20 mm

If the wide-flange beam is subjected to a shear of V = 20 kN, determine the shear stress on the web at A. Indicate the shear-stress components on a volume element located at this point. 200 mm 20 mm...

Determine the shape factor of the cross section. fototod

Determine the shape factor of the cross section.

The beam is made of an elastic perfectly plastic material for which Ï Y = 200 MPa. If the largest moment in the beam occurs within the center section aa, determine the magnitude of each force P...

If the wide-flange beam is subjected to a shear of V = 30 kN, determine the sheer force resisted by the web of the beam. Set w = 200 mm. 200 mm LA 25 mm 30 mm 250 mm 30 mm

Sketch the intensity of the shear-stress distribution acting over the beams cross-sectional area, and determine the resultant shear force acting on the segment AB. The sheer force acting at the...

The composite beam is constructed from wood and reinforced with a steel strap. Use the method of Sec. 6.6 and calculate the maximum shear stress in the beam when it is subjected to a shear of V = 50...

The simply supported beam is built up from three boards by nailing them together as shown. The wood has an allowable shear stress of Ï allow = 1.5 MPa, and an allowable bending stress of Ï...

The aluminum strut is 10 mm thick and has the cross section shown. If it is subjected to a shear of V = 150 N, determine the shear flow at points A and B. 10 mm 40 mm 10 mm t+-40 mm- 30 mm 30 mm 10...

The bar has a diameter of 40 mm. determine the state of stress at point B and show the results on a differential volume element located at this point. 200 mm y 200 mm 1200 N 15 800 N

The steel water pipe has an inner diameter of 12 in. and a wall thickness of 0.25 in. If the valve A is closed and the water pressure is 300 psi, determine the longitudinal and hoop stress developed...

A boiler is constructed of 8-mm-thick steel plates that are fastened together at their ends using a butt joint consisting of two 8-mm cover plates and rivets having a diameter of 10 mm and spaced 50...

The tank of the air compressor is subjected to an internal pressure of 90 psi. If the inner diameter of the tank is 22 in., and the wall thickness is 0.25 in., determine the stress components acting...

The 20-kg drum is suspended from the hook mounted on the wooden frame. Determine the state of stress at point E on the cross section of the frame at section aa. Indicate the results on an element. 50...

Determine the stress components acting on the inclined plane AB. Solve the problem using the method of equilibrium described in Sec. 9.1. 60 MPa 80 MPa 50 40 MPa B.