Consider the unit of a carbon nanotube projected onto a graphene sheet shown below. (a) What are the n and m values of this carbon nanotube? (b) Is this a metallic or semiconducting nanotube? (c)...

Identify the most electronegative element in each of the following compounds: a) CH 3 OCH 2 CH 2 NH 2 b) CH 2 ClCH 2 F c) CH 3 Li

Propose a plausible mechanism for the following tautomerization process: . CH CH3 ,

Draw the mechanism and predict the product of the following reaction. In this case, H 3 O + must be used as a proton source instead of water. Explain why. 1) xs MeMgBr 2) H*

Predict the major product of the following reaction. CI- AICI, CI

Draw the structure of the major product obtained when aniline is treated with each of the following reagents: (a) Excess Br 2 (b) PhCH 2 COCl, py (c) Excess methyl iodide (d) NaNO 2 and HCl followed...

The long bolt passes through the 30-mm-thick plate. If the force in the bolt shank is 8 kN, determine the average normal stress in the shank, the average shear stress along the cylindrical area of...

The linkage is made of three pin-connected A992 steel members, each having a diameter of 1¼ in. Determine the magnitude of the force P needed to displace point B 0.25 in. to the right. t - 3...

If the allowable bending stress is Ï allow = 150 MPa, determine the maximum intensity w of the uniform distributed load. -6 m 300 mm 150 mm

The floor of the office building is made of 4-in.-thick lightweight concrete. If the office floor is a slab having a length of 20 ft and width of 15 ft, determine the resultant force caused by the...

Determine the force in each member of the truss. State if the members are in tension or compression. 4 k 4 k 9 ft 2 k |C B 30 12 ft - 12 ft 12 ft

Determine the force in each member of the roof russ. State if the members are in tension or compression. 8 kN 4 kN 4 kN 4 kN 4 kN - 4 kN - | 3.5 m 4 kN 6 @ 4 m = 24 m

Determine the force in members GF, FB, and BC of the Fink truss and state if the members are in tension or compression. 600 lb 800 lb 800 lb E 60 30 60 30 D -10 ft -10 ft- -10 ft-

Solve the equations x 1 + 2x 2 - 2x 3 = 5, x 1 - x 2 + x 3 = -1, x 1 - x 2 - x 3 = 1 Using the matrix equation x = A -1 C.

Compute the pressure change required to cause a decrease in the volume of machine oil by 1.00 percent. Express the result in both psi and MPa.

Water at 40C. Appendix D gives dynamic viscosity for a variety of fluids as a function of temperature. Using this appendix, give the value of the viscosity for the following fluids

Describe the difference between an SAE 20 oil and an SAE 20W oil.

Carbon dioxide has a density of 1.964 kg/m 3 at 0C. Calculate its specific weight.

Figure P2.15 shows several hypothetical positiontime graphs. For each graph, sketch qualitatively the corresponding velocity time graph. Figure P2.15 Case 1 Case 2 Case 3

For the manometer shown in Fig. 3.28, calculate (p A - p B ). Oil (sg = 0.85) 8 in Water 33 in 12 in

An isotropic quasimonochromatic point source radiates at a rate of 100 W. What is the flux density at a distance of 1 m? What are the amplitudes of the vector E- and vector B-fields at that point?

Fuel oil is flowing in a 4-in Schedule 40 steel pipe at the maximum rate for which the flow is laminar. If the oil has a specific gravity of 0.895 and a dynamic viscosity of 8.3 10 -4 lb - s/ft 2 ,...

Design a problem to help other students better understand wye-delta transformations using Fig. 2.114. What value of R in the circuit of Fig. 2.114 would cause the current source to deliver 800 mW to...

Assuming that the capacitors are initially uncharged, find v o (t) in the circuit of Fig. 6.62 . (mA) A 6 F 90 is 3 F vo(t) 2 t(s)

A proposed alternate form for the heat exchanger described in Problem 10.37 is shown in Fig. 10.33. The entire flow conduit is a 3/4-in steel tube with a wall thickness of 0.065 in. the ID for this...

Find all of the 1-hazards in the given circuit. Indicate which changes are necessary to eliminate the hazards. c'

Air with a specific weight of 12.7 N/m 3 and a kinematic viscosity of 1.3 Ã 10 5 m 2 /s is flowing through a flow nozzle similar to that shown in Fig. 15.4. A manometer using water as the gage...

Compute the specific weight of propane at 12.6 psig and 85F.

Show that for a double-slit Fraunhofer pattern, if = mb, the number of bright fringes (or parts thereof) within the central diffraction maximum will be equal to 2m.

A ball rolls without slipping down the track shown in Figure P9.24, starting from rest at a height h 1 = 20 m as shown. The ball is traveling horizontally when it leaves the bottom of the track,...

Consider a simple harmonic oscillator whose position as a function of time is given by Figure P11.38. At what times in this plot is the kinetic energy a maximum? At what time(s) is the potential...

Figure P12.1 shows several snapshots of a wave pulse as it travels along a string. Estimate the speed of the wave pulse. Figure P12.1 ? (m) t = 0 0.2 x (m) 10 40 50 60 70 -0.2 0.2 _t = 1 s x (m) 10...

A wave on a Slinky has a frequency of 2.3 Hz. It takes 3.5 s to travel the length of the Slinky (0.30 m). What is the wavelength?

An electron enters a bubble chamber and produces a spiral track like that shown on the left in Figure Q20.13. The magnetic field is directed into the page, and the electron had an initial velocity of...

Refer to Fig. 5.35. The vessel shown is to be used for a special experiment in which it will float in a fluid having a specific gravity of 1.16. It is required that the top surface of the vessel is...

A moving object whose initial KE is 10 J is subject to a frictional force of 2 N that acts in the opposite direction. How far will the object move before coming to a stop?

An 800-kg car coasts down a hill 40 m high with its engine off and the drivers foot pressing on the brake pedal. At the top of the hill the cars speed is 6 m/s and at the bottom it is 20 m/s. How...

A fuel distributor supplies four liquid fuels, each of which has a different ratio of ethanol to gasoline. Five percent of the demand is for E100 (pure ethanol), 15% for E85 (85.0 volume% ethanol),...

Which of the following amino acids has a polar side chain? NH2 HANCH-CH-CH,CH-CH NH2 CHHH CH CH3

The standard heat of combustion of liquid n-octane to form CO 2 and liquid water at 25C and 1 atm is H c = 5471 kJ/mol. (a) Briefly explain what that means. Your explanation may take the form When...

An apple weighs 60 g and has a volume of 75 cm 3 in a refrigerator at 8 C. What is the apples density? List three intensive and two extensive properties of the apple.

A cascade system is composed of two ideal refrigeration cycles, as shown in Fig. 9.28. The high temperature cycle uses R-410a. Saturated liquid leaves the condenser at 40C, and saturated vapor leaves...

This question is about endothermic and exothermic reactions. a. Explain the meaning of the terms endothermic and exothermic. b. (i) Draw an energy level diagram for the reaction: (ii) Is this...

A motorcyclist of mass 60 kg rides a bike of mass 40 kg. As she sets off from the lights, the forward force on the bike is 200 N. Assuming the resultant force on the bike remains constant, calculate...

Draw dot-and-cross diagrams for the following covalently bonded molecules. Show only the outer electron shells. Note that in part d the beryllium atom is electron deficient and in part e the...

Calculate the orbital speed of an artificial satellite travelling 200 km above the Earths surface. (The radius of Earth is 6.4 10 6 m and its mass is 6.0 102 4 kg.)

A boy stands on a cliff edge and throws a stone vertically upwards at time t = 0. The stone leaves his hand at 20 m s 1 . Take the acceleration of the ball as 9.81 m s 2 . a. Show that the equation...

A student drops a small black sphere alongside a vertical scale marked in centimetres. A number of flash photographs of the sphere are taken at 0.10 s intervals: The first photograph is taken with...

A solid uniform hemisphere, of radius r, is placed onto a rough plane inclined at 45 to the horizontal. A force, P, parallel to and up the plane, is applied to the hemisphere at a point that is r/2...

In an analysis of salaries paid to sales personnel in a company, it is found that those salaries have modes of $75,000 and $95,000. Does It Make Sense? For Exercises, determine whether the statement...

Spin Cycle Architecture uses three activity pools to apply overhead to its projects. Each activity has a cost driver used to assign the overhead costs to the projects. The activities and related...

The x 2 statistic from my study was close to zero, so I rejected the null hypothesis.

The absorption spectrum of I 2 has E 00 /hc = 15,677 cm 1 , and the onset of the continuum is at 19,735 cm 1 . The excited state dissociates to I( 2 P 3/2 ) + I( 2 P 1/2 ), which is 7589 cm 1 above...

We usually measure the densities of solids and liquids at a temperature of 25 C. Express this temperature on the Fahrenheit and Kelvin scales. Strategy There are 1.8 F for every 1.0 C. The scales do...

Consider an infinite 1D chain of equally spaced fluorine atoms. (a) Sketch the band structure of this chain. Include all four valence orbitals (2s, 2p x , 2p y , 2p z ) in the diagram and indicate...

Write out half equations, the cell reaction, and determine the standard potential of the following cells given standard electrode potentials E(Cu+/Cu) = +0.34 V, E(Sn*/Sn) = -0.14 V, E(Co*/Co) =...

Propose a plausible synthesis for the following transformation (many steps are required):

Identify the reagents that you would need to accomplish each of the following transformations. a. b. H.

5-Methylcyclopentadiene undergoes homolytic bond cleavage of a C!H bond to form a radical that exhibits five resonance structures. Determine which hydrogen is abstracted and draw all five resonance...

Calculate S for the isothermal compression of 1.75 mol of Cu(s) from 2.15 bar to 1250. bar at 298 K. = 0.492 10 4 K 1 , = 0.78 10 6 bar 1 , and the density is 8.92 g cm 3 . Repeat the calculation...

Explain why the spectator species M in Equation (25.5) is needed to make the reaction proceed.

The transition has two lines given by vÌ = 25354.8 cm 1 and vÌ = 25242.7 cm 1 . The transition has three lines given by vÌ = 32444.8 cm 1 , vÌ = 32334.0 cm 1 , and...

The disaccharide lactose can be decomposed into its constituent sugars galactose and glucose. This decomposition can be accomplished through acid-based hydrolysis, or by the enzyme lactase. Lactose...

Consider the schematic reaction a. If the reaction is one-half order with respect to [A], what is the integrated rate law expression for this reaction? b. What plot would you construct to determine...

The rigid beam is supported by the three suspender bars. Bars AB and EF are made of aluminum and bar CD is made of steel. If each bar has a cross-sectional area of 450 mm 2 , determine the maximum...

A point on a thin plate is subjected to the two stress components. Determine the resultant state of stress represented on the element oriented as shown on the right. 60 MPa 85 MPa 45 30 85 MPa

The state of stress at a point is shown on the element. Determine (a) the principal stresses and (b) the maximum in-plane shear stress and average normal stress at the point. Specify the orientation...

Classify each of the structures as statically determinate, statically indeterminate, or unstable. If indeterminate, specify the degree of indeterminacy. The supports or connections are to be assumed...

Classify each of the following trusses as stable, unstable, statically determinate, or statically indeterminate. If indeterminate state its degree. a. b. c.

Determine the force in each member of the truss and state if the members are in tension or compression. 4 kN -3 m- 3 m- 3 m- B. 3 m 5 m 5 kN

Determine the force in members JK, JN, and CD. State if the members are in tension or compression. Identify all the zero-force members. K 20 ft DE B - 20 ft- 30 ft- - 20 ft 2 k 2k

Determine the force in members BG, HG, and BC of the truss and state if the members are in tension or compression. 4.5 m 3 m D 7 kN 6 kN 4 kN 12 m, 4 @ 3 m

Determine the forces in all the members of the lattice (complex) truss. State if the members are in tension or compression. K 12 ft 6 ft D A B 12 ft 6 ft 6 ft- 2k

Draw the shear and moment diagrams for each member of the frame. Assume the frame is pin connected at A, and C is a roller. 4 k/ft 15 k 4 ft 10 k 4 ft -10 ft

Draw the shear and moment diagrams for each member of the frame. Assume the frame is roller supported at A and pin supported at C. 1.5 k/ft B -10 ft- 6 ft 2 k 6 ft

Draw the influence line for (a) The vertical reaction at A, (b) The shear at B, and (c) The moment at B. Assume A is fixed. Solve this problem using the basic method of Sec. 61. A. 2 m

Draw the influence line for the force in member GD, then determine the maximum force (tension or compression) that can be developed in this member due to a uniform live load of 3 kN/m that acts on...

Convert 1250 millimeters to meters.

A fluid has a kinematic viscosity of 15.0 mm 2 /s at 100F. Determine its equivalent viscosity in SUS at that temperature.

For the compound manometer shown in Fig. 3.31, calculate the pressure at point A. Oil (sg = 0.90) Water 125 mm 475 mm 250 mm 50 mm Mercury (sg = 13.54)

When 2000 L/min of water flows through a circular section with an inside diameter of 300 mm that later reduces to a 150-mm diameter, calculate the average velocity of flow in each section.

Compute the time required to reduce the depth in the tank shown in Fig. 6.14 by 225 mm if the original depth is 1.38 m. The tank diameter is 1.25 m and the orifice diameter is 25 mm. dh

Oil with a specific gravity of 0.90 is flowing downward through the venturi meter shown in Fig. 6.33. If the manometer deflection h is 28 in, calculate the volume flow rate of oil. 4-in inside...

Repeat Problem 6.49 for a DN 50 Schedule 80 pipe. Repeat Problem Compute the resulting velocity of flow if 400 L/min of fluid flows through a DN 50 Schedule 40 pipe.

Determine io in the circuit of Fig. 2.84. 222 51o 54 V(+

Given the circuit in Fig. 2.101 and that the resistance, R eq , looking into the circuit from the left is equal to 100 Ω, determine the value of R 1 . R ww R1 R,

Determine the energy loss due to a gradual enlargement from a 25 mm OD 2.0 mm wall copper hydraulic tube to a 80 mm OD 2.8 mm wall tube when the velocity of flow is 3 m/s in the smaller tube and...

Determine the required size of new Schedule 80 steel pipe to carry water at 160F with a maximum pressure drop of 10 psi per 1000 ft when the flow rate is 0.5 ft 3 /s.

An expanded beam of red light from a HeNe laser ( 0 = 632.8 nm) is incident on a screen containing two very narrow horizontal slits separated by 0.200 mm. A fringe pattern appears on a white screen...

Two light waves E x = E 0 cos (kz - t) and E y = -E 0 cos (kz - t) overlap in space. Show that the resultant is linear light and determine its amplitude and tilt angle .

Explain why a complete circuit is necessary for a nonzero current to exist.

The two long wires in Figure P20.1 carry parallel currents of equal magnitude I. Give the direction of the total magnetic field at points A, B, C, and D. A B D

Find the available NPSH when a pump draws water at 140F from a tank whose level is 4.8 ft below the pump inlet. The suction line losses are 2.2 lb-ft/lb and the atmospheric pressure is 14.7 psia.

Give the product(s) of each of the following reactions. (a) (b) (c) (d) (e) NH2 CH;CCI + 2

In non-aqueous solvents, it is possible to react HF to create H 2 F + . Which of these statements follows from this observation? (a) HF can act like a strong acid in non-aqueous solvents (b) HF can...

Convert the following perspective formulas to Fischer projections. (a) (b) (c) (d) H OH .C. CH; CH,OH

The first law of thermodynamics states that the change U in the internal energy of a system is given by U = Q W, where Q is the heat and W is the work. Both Q and W can be positive or negative...

The diagram shows a pair of nutcrackers. Forces F are applied to the handles of the nutcrackers. a. The forces on the nut are bigger than F. Explain this. b. The nut does not crack. State two changes...

Several years ago, management at Tuglar Corporation established a grievance committee composed of employees who volunteered to work toward the amicable resolution of disputes between Tuglar...

Harriet McNeil, proprietor of McNeils Auto Mall, believes that it is good business for her atuomobile dealership to have more customers on the lot than can be served, as she believes this creates an...