Thursday
August 28, 2014

Homework Help: Science: Engineering

Recent Homework Questions About Engineering

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Engineering maths
A rectengular swimming pool 30m long and 22m wide is made.And a deck of the uniform width is made around the pool,and only 480m^2 deck is made,HOW WIDE SHOULD THE DECK BE?
Sunday, August 17, 2014 at 4:55pm

physics, mit 2.01x, mechanical engineering
MITx 2.091x Can anyone help me on this question: HW9_3: Design against buckling in a SD truss We are considering again the truss in the figure, from homework problem HW4_2. The truss is loaded at joint C as indicated, and we had determined the axial forces in each of the bars ...
Friday, August 15, 2014 at 10:43pm

Accounting
On October 10, 2010, Mason Engineering Company completed negotiations on a contract for the purchase of new equipment. Under the terms of the agreement, the equipment may be purchased now or Mason may wait until January 10, 2011, to make the purchase. The cost of the equipment...
Wednesday, August 13, 2014 at 3:13pm

statistics
The human resources department of an engineering company gives IQ tests to a randomly selected group of new hires every year. They claimed that the mean IQ score of new hires, , from this year is greater than or equal to the mean IQ score of new hires, , from last year. This ...
Sunday, August 3, 2014 at 4:01pm

environmental engineering
Coal has about 2% sulfur. How many kilograms of sulfur would be emitted from coalfired power plants in the United States in 1 yr? (U.S. electricity production is about 0.28 × 1012 watts, and coal has an energy content of about 30 × 106 J/kg. Note that 1 J = 1W-sec.)
Thursday, July 10, 2014 at 7:16am

environmental engineering
A water treatment plant has 6 settling tanks that operate in parallel (the flow gets split into six equal flow streams), and each tank has a volume of 600m3. If the flow to the plant is 10 mgd, what is the retention time in each of the settling tanks? If, instead, the tanks ...
Thursday, July 10, 2014 at 7:15am

environmental engineering
A power plant emits 120 lb of flyash per hour up the stack. The flow rate of the hot gases in the stack is 25 ft3/sec. What is the concentration of the flyash in micrograms per cubic meter?
Thursday, July 10, 2014 at 7:14am

environmental engineering
A water treatment plant produces water that has an arsenic concentration of 0.05 mg/L. a) if the average consumption of water is 8L of water each day,how much arsenic is each person drinking? b)If you are the water treatment plant operator and the chairman of the town council ...
Thursday, July 10, 2014 at 7:13am

mechanical engineering
A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . E4_1? All the bars in truss ABC have constant cross section and are made of a homogeneous ...
Wednesday, July 2, 2014 at 6:06pm

engineering economics analysis
where can i attach a file ?
Friday, June 20, 2014 at 12:15am

engineering science
The mass of a truck is 5000kg and it is stationary on an incline plane making an angle of 16 with the horizontal. The coefficient of friction
Thursday, June 19, 2014 at 2:54am

Engineering science
a 50kg mass is suspended from a spring, causing it to extend by 30mm. calceolate the spring stiffness? The mass is then pulled down a distance of 90mm and released. calculate the frequency of the resulting motion, assuming that this is simple harmonic, calculate the velocity ...
Monday, June 9, 2014 at 1:18pm

Chemistry
Chemistry and engineering topics how chemistry relates to engineering for my 10 page research paper
Saturday, May 31, 2014 at 6:00pm

engineering mechanics
A police officer observes a motorist who is approaching at a uniform speed of 80km/h he in his patrol car starts chasing it as it just crosses him.after accelerating for 8 seconds at a constant rate he attains his top speed of 120km/h how long does it take to overtake the ...
Thursday, May 29, 2014 at 1:48am

Science
Can anyone help me with some topics to write about on what chemistry has to do with mechanical engineering. Anyone's help would be appreciated because I really need to finish this 10 page research paper.
Tuesday, May 27, 2014 at 3:23pm

Chemistry
Can anyone help me with some topics to write about on what chemistry has to do with mechanical engineering. Anyone's help would be appreciated because I really need to finish this 10 page research paper.
Thursday, May 22, 2014 at 4:06pm

English
Identify the word that has an error in capitalization. Destini plans to study engineering at Stanford university. A.) engineering B.) Stanford C.) university**************************** D.) no error Did you know that the largest lake in North America is Lake Superior? A.) ...
Wednesday, May 21, 2014 at 12:50pm

Engineering skill
anybody here to give me notes to solve this question (A and B are two points on a pipe of diameter 600 mm. the grid reference for the two points are given in the below , together with the elevation of the top of the pipe at these points. A drain pipe is being planned, and P ...
Saturday, May 10, 2014 at 2:15pm

engineering
Hello guys.I got a homework and seem like I am stocked. a)What type of experiments should be done to find the relationship between the strength of concrete and water/cement ratio. b)what will be the range of the water/cement ratio? It would be great if you help.Thank you!
Sunday, May 4, 2014 at 5:27pm

science
How are restriction enzymes important tools in genetic engineering?
Thursday, May 1, 2014 at 1:13am

Engineering
Three resistors , 50 ohms, 100 ohms, and r3 are connected in a series to a power source with potential difference 48 volts and a current throughout the circuit. Can anyone help me figure out what r3 is ?
Tuesday, April 29, 2014 at 6:17pm

Engineering Physics
which of the following is equal to the angular acceleration of a disk? a)first time derivative of angular position b) second time derivative of angular position
Monday, April 28, 2014 at 5:47am

electrical engineering
A three phase, four- pole, 30-hp, 220-V, 60-Hz, Y-connected induction motor draws a current of 77 A from the line source at a power factor of 0.88. At this operating condition, the motor losses are known to be the following: Stator copper losses = 1033 W Stator core losses = ...
Saturday, April 19, 2014 at 5:06pm

electrical engineering
A 3-ph., 4-pole, 60Hz induction motor is supplied by a 660-V source. At a particular loading, the total power consumed is 65KW and the current drawn from supply is 70A (assume star connection). The rotor speed is 1760rpm. The stator iron losses are 1.2KW, the windage and ...
Saturday, April 19, 2014 at 5:05pm

cost accounting
Marvin’s Motors Company (MMC) manufactures outboard motors for use on small to medium sized boats. MMC produces three models: the Standard, the Deluxe and the Performance. The company uses a normal job costing system with manufacturing overhead applied on the basis of ...
Friday, April 18, 2014 at 8:18am

engineering mathematics 1
your father wants to fence a rectangular area in your backyard for a garden. one side of the garden is along rhe edgeof the yard is already fenced, so you only need to build a new fence along the other 3 sides of rectangle. if you have 80 meter of fencing available, what ...
Thursday, April 17, 2014 at 11:35pm

engineering
A certain amount of radioisotope (986.8 x 10-9 kg) is used to make the dial of a watch glow in the dark. If the half-life of this isotope is 3.69 x 103 years, how many kilograms of the radioisotope will disappear while the watch is in use for fifty years?
Sunday, March 30, 2014 at 1:30pm

Engineering Science
If a helical tension spring consisting of 12 live coils of ¼ inch steel wire and of 1 ¼ inch mean diameter is attached to the end of another helical tension spring of 18 live coils of ¼ inch steel wire and of 1 ¾ inch mean diameter, calculate the ...
Tuesday, March 25, 2014 at 4:16am

please check(Social studies)
please check my answers thanks 1.B 2.C 3.B 4.B 5.C and D 1.How did the haitian revolution impact the history of the united states? A.It brought the united states into a war with spain over cuba. B.France no longer had haiti,so Napeleon was willing to sell louisiana. C.Slave ...
Wednesday, March 12, 2014 at 8:04pm

life orientation
study fieldy/career of chemical engeneering,mechanical engineering,and provide two reasons for each choice
Wednesday, March 12, 2014 at 12:08pm

Finance
Wanstead Engineering Case 9 The annual bonus for senior managers at Wanstead Engineering was first agreed in 1998. Since then the company has seen no need to make any changes to the way in which the bonus is calculated. Both shareholders and managers agree the bonus is ...
Wednesday, March 12, 2014 at 12:47am

Engineering science
A brick with a mass of 6kg is dropped vertically from a certain height.it takes 4,5 seconds for the brick to reach the ground.determine the ff.the height from which the brick is dropped and potential energy of the brick
Saturday, March 8, 2014 at 3:39pm

LECTRICAL ENGINEERING
WHAT IS THE FORMULAR FOR CALCULATING THERMAL ENERGY WHEN GIVEN CURRENT,VOLTAGE,TIME,TEMPERATURE
Thursday, March 6, 2014 at 2:08pm

engineering
Building and construction A. Architecture B. Engineering C. Nursing D. Statistics
Thursday, February 27, 2014 at 8:53pm

social studies
In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. Which contributed the most to San Francisco's population change? (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail of Tears 2. ...
Tuesday, February 25, 2014 at 7:04pm

social studies
In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. Which contributed the most to San Francisco's population change?  (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail ...
Sunday, February 23, 2014 at 6:14pm

physical since,pure maths,life science
wt cn i become? except all de engineering thngs?plz help
Sunday, February 23, 2014 at 5:20am

tech
Why is drawing important to Technology and Engineering?
Thursday, February 20, 2014 at 6:08pm

engineering
. A platform with boat weighs 10,000 N. Four cables are attached to the platform as shown; the edges of the platform are always a horizontal distance of 2 m from the pulleys. As the platform rises smoothly and evenly, the length L of the cables decreases and the angle θ ...
Monday, February 17, 2014 at 3:40am

careers
Universities in India from where jobs from abroad will be offered to students after completing B.Tech in aeronautical engineering.
Wednesday, February 12, 2014 at 11:16pm

Science
Associate each item in the table with at least one field of science and one area of technology/engineering. Choose from the terms given at the bottom. Automobile aspirin shirt computer pesticide satellite robot atomic bomb vaccination can of soup polyester wrapper skyscraper ...
Tuesday, February 11, 2014 at 1:00am

Engineering
Microprocessing chips are randomly sampled one by one from a large population, and tested to determine if they are acceptable for a certain application. Ninety percent of the chips in the population are acceptable.
Thursday, January 30, 2014 at 1:44pm

Engineering science N4
Calculate the angle of projection of a projectile in order to hit a target 12km away.the initial velocity is 700m/s ant the time of the flight is 80seconds.
Thursday, January 30, 2014 at 4:57am

Engineering science N4
A ship is 100km north-west of cape town harbour and it sails directly north at a velocity of 30km/h in 8 hours.calculate its resultant speed with reference to the cape town harbour in magnitude and direction.
Thursday, January 30, 2014 at 4:52am

Accounting, TAX
Which of the following entities may not use the cash method of accounting? A partnership with average annual gross receipts in excess of $5 million. A C corporation whose average annual gross receipts for the preceding 3 taxable years do not exceed $5 million. A C corporation ...
Saturday, January 25, 2014 at 8:28pm

materials science engineering
Identify the [221] vector.(crystallographic directions qns) The answer given corresponds to 0.5 in x direction,0.5 in y and 1 in z. Why is it not [1 1 0.5], the simply reduced form. The ans is the reciprocal of [221], which puzzles me since this is not a plane.
Saturday, January 25, 2014 at 1:50am

english
You've been assigned to invite a group of mechanical engineering professors to tour your facility. What type of language should you use in the invitation? A Formal language B Direct, simple language C Technical jargon D Pompous language
Thursday, January 23, 2014 at 10:02pm

soicalstudies(CHECK ANSWERS) 10Qs
please check them ! 1. The Aztecs adapted to their environment mainly by A.using terracing and irrigation to farm. B.living a nomadic hunter-gatherer lifestyle. C.trading peacefully with neighbors. D.settling along the coasts where they could fish.(I PICK THIS) 2. Why did ...
Thursday, January 23, 2014 at 3:04pm

intro to computers
what type of device is characteristic of an enterprise environment? a workstation used by a retired person. a workstation used at an engineering firm. a tablet computer used by an elementary school student a notebook used by a college student
Tuesday, January 21, 2014 at 6:33pm

Environmental Engineering
The EPA requires hazardous waste incinerators to meet a standard of 99.99% destruction and removal of hazardous constituents injected into the incinerator. Determine the allowable quantity of contaminant in the exit stream if the incinerator is burning 1.0000 g/s of hazardous ...
Wednesday, January 15, 2014 at 3:35pm

linear optimization
During a summer session a student enrolls in two courses, psychology for four hours and engineering for three hours. The student wants to use the available time to amass the largest number of grade points (numerical grade multiplied by the number of hours). Students who have ...
Sunday, December 29, 2013 at 10:45am

engineering
In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + ½O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the ...
Thursday, December 19, 2013 at 9:42pm

engineering
The flow system as shown in the Figure, the centrifugal pump(3500 R.P.M.) is delivering water at 100 gal/min and 70 °F into a boiler operating at a pressure of 35 psig. The water levels in the feed tank and boiler are constant. Because corrosion is expected to be ...
Wednesday, December 18, 2013 at 12:04pm

engineering
The flow system as shown in the Figure, the centrifugal pump(3500 R.P.M.) is delivering water at 100 gal/min and 70 °F into a boiler operating at a pressure of 35 psig. The water levels in the feed tank and boiler are constant. Because corrosion is expected to be ...
Wednesday, December 18, 2013 at 10:06am

Batteries - Engineering
Here we consider instead dissolving guns (which we will assume are pure iron) with sulfuric acid. Fe+H2SO4->FeSO4+H2 It is apparent that they must use an outside source of electrical power to drive the dissolution of the iron. They use a small current so that the ...
Wednesday, December 18, 2013 at 2:33am

Solar Energy - Engineering
In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + ½O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the ...
Wednesday, December 18, 2013 at 2:30am

Math-Algebra
(Engineering) The current / varies as the electromotive force E and inversely as the resistance R. If in a system, a current of 20A flows through a resistance of 20 ohms with an electromotive force of 100V, find the currect that 150V will send throu+gh the system. (Navigation...
Wednesday, December 18, 2013 at 1:55am

Engineering
In the process of electrolysis, electrical power is used to separate water into oxygen and hydrogen molecules via the reaction: H2O --> H2 + ½O2 This is very much like running a hydrogen fuel cell in reverse. We assume that only the activation potential for the ...
Sunday, December 15, 2013 at 10:31am

Engineering
Here we consider instead dissolving guns (which we will assume are pure iron) with sulfuric acid. Fe+H2SO4->FeSO4+H2 The characters realize that their hideout has been discovered by the police and they still have a last handgun that weighs 0.25 kg to dissolve. The cops will...
Sunday, December 15, 2013 at 10:28am

Engineering
Here we consider instead dissolving guns (which we will assume are pure iron) with sulfuric acid. Fe+H2SO4->FeSO4+H2 It is apparent that they must use an outside source of electrical power to drive the dissolution of the iron. They use a small current so that the ...
Sunday, December 15, 2013 at 10:25am

science(please check answers)
Identify the choice that best completes the statement or answers the question. 1.Studies conducted in England during the Industrial Revolution have shown that children born to poor families were, on average, shorter than those born to wealthier parents. The most likely ...
Wednesday, December 4, 2013 at 11:57am

engineering
A saturated soil sample under CU test was subjected to a confining pressure of 200 kPa with back pressure (pore pressure) of 50 kPa. What would be the value of pore pressure if the confining pressure was raised to 400 kPa without drainage? If the pore pressure parameter A is 0...
Wednesday, December 4, 2013 at 2:05am

engineering
In a Direct Shear Test please help. 1)How do we determine the spacing between the two parts of shear box? What would happen if it is not set properly? 2) The shear and normal stress can be calculated with the corrected area considering the movement of displacement. How would ...
Sunday, December 1, 2013 at 11:30pm

Electrical Engineering
Winter is coming, so I want to make a 1500 W heating coil which will plug into a 120 V wall outlet. The coil will have a cross sectional area of 0.01 cm2 and a length (when fully unwound) of 5 m. Determine the resistivity of the coil required, in Ωcm:
Friday, November 29, 2013 at 11:07am

Science
Scientists have inserted the gene for human insulin into bacteria. These bacteria make the insulin protein, which can then be used by people who have diabetes. This process is an example of -hybridization -gene therapy -selective breeding -genetic engineering my answer is D
Thursday, November 21, 2013 at 12:56pm

English
Which words go in the following sentences. Young Charles was born in 1902 and was growing/grew up on a farm. Later, although he has studied/had studied engineering in college, he was more interested in flying planes.
Monday, November 18, 2013 at 4:39pm

civil engineering
For a soil with significant secondary compression, if the duration of each loading increments is lengthened to a few days, what would be the effects on the void ratio vs. Log p curve and the preconsolidation pressure?
Monday, November 18, 2013 at 7:22am

Anyone wanna help me with this math?
Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Studies conducted in England during the Industrial Revolution have shown that children born to poor families were, on average, shorter than those born to wealthier parents. The ...
Saturday, November 2, 2013 at 2:42am

Electrical Engineering
Find the latitude at Stanford University using Google Maps to the nearest degree (This is how you do it) and calculate the Air Mass Factor on the autumnal equinox (when the center of the sun is in the same plane as the equator of the earth) at noon (when the sun is directly ...
Friday, November 1, 2013 at 1:02am

Engineering
At 300 K we see the electron concentration in the conduction band for pure (undoped) Si is 1010/cm3. How many electrons per Si atom is this? You can use scientific notation, as in A.AAeB Si is diamond cubic with 8 Si atoms per unit cell and a lattice parameter of 0.543 nm.
Friday, November 1, 2013 at 1:00am

engineering
A compartment measures 3 meters by 5 meters and is 2.8 meters high. A fire raises the temperature from 20oC to 1000 oC. If the starting pressure was 1 atmosphere, what pressure is present at the elevated temperature assuming the compartment remains closed?
Wednesday, October 23, 2013 at 10:49am

engineering
What is the change in enthalpy for an isothermal, isentropic compression of an ideal gas from 2 atm to 12 atm?
Wednesday, October 23, 2013 at 1:23am

Report (Writeacher or Ms. Sue)
Does my report require any editing? "Incorporated as a city in 1837, Chicago has experienced great changes, rapid growth, and an immense amount of industrialization since the time of its original creation. From once being inhabited merely by a Native American tribe known ...
Monday, October 21, 2013 at 8:56pm

Geography Report (Ms. Sue)
This is what I have written for the conclusion paragraph so far. "Therefore, to summarize this report, the city of Chicago, located in northeastern Illinois in the Great Lakes Region, has become a highly industrialized city, possessing a large population and miserable ...
Monday, October 21, 2013 at 7:07pm

Geography Report (Ms. Sue)
This is what I have written so far. Do you suggest any improvements? Location: Chicago's absolute location is about 42 degrees North latitude and 87 degrees West longitude. It is located upon the southwestern shore of Lake Michigan in the northeastern part of Illinois. ...
Monday, October 21, 2013 at 5:01pm

Geography Report (Ms. Sue)
This is the human-environment interaction paragraph. "There are many examples of human-environment interaction in the city of Chicago, such as its architecture, dams, bridges, and its highways. However, what it is believed to the most astonishing display of human-...
Sunday, October 20, 2013 at 11:00pm

school of engineering
police officer in a patrol car parked in a70km/h observes a passing auto mobile travelling at a slow constant speed believing that of the automobile might be intoxicated the officer starts his car accelerate uniformly to 9km/h in 8s.and maintaining a constant velocity of 90km/...
Thursday, October 17, 2013 at 4:06pm

school of engineering
A train of mass 200 tonne travelling at 140 km/hour applies the brakes fiercely, so that the brakes lock and the wheels slide along the rails. It stops after sliding 1000m. Calculate: (i) The acceleration, (ii) The longitudinal force on the rails, (iii) The coefficient of ...
Wednesday, October 16, 2013 at 11:20am

school of engineering
A train of mass 200 tonne travelling at 140 km/h applies the brakes fiercely , so that the brakes lock and the wheels slides along the rails.it stops sliding 1000m. calculate. 1. The acceleration. 2. The longitudinal force on the rail. 3. The coefficient of friction between ...
Wednesday, October 16, 2013 at 10:43am

school of engineering
A train of mass 200 tonne travelling at 140 km/h applies the brakes fiercely , so that the brakes lock and the wheels slides along the rails.it stops sliding 1000m. calculate. 1. The acceleration. 2. The longitudinal force on the rail. 3. The coefficient of friction between ...
Tuesday, October 15, 2013 at 7:08am

school of engineering
a motor of mass 1500 kg accelerates from 50 km/h to 100 km/h in 10 seconds.calculate. (i)The acceleration in metre/second2. (ii)The distance travelled. (iii)The force on the vehicle.
Tuesday, October 15, 2013 at 6:59am

chemistry
The use of the British thermal unit (Btu {\rm Btu}) is common in much engineering work. (1 Btu {\rm Btu} = 1054J {\rm J}) A Btu {\rm Btu} is the amount of heat required to raise the temperature of 1 lb {\rm lb} of water by 1 ∘ F ^\circ {\rm F}. How many quads of energy ...
Monday, October 7, 2013 at 11:31pm

engineering (logic systems design)
Two flip-flops are connected as shown below. The delay represents wiring delay between the two clock inputs, which results in clock skew. This can cause possible loss of synchronization. The flip-flop propagation delay from clock to Q is 10 ns < tp < 15 ns, the set-up ...
Thursday, October 3, 2013 at 2:50pm

Engineering
What is the critical buckling force that will buckle a 9 foot tall 2 x 4 (K = 1.0)? Please show how to set up the problem and the steps to solve. I do not understand. Thank you.
Sunday, September 29, 2013 at 11:46am

chemisry
What are the specializations of sanitary engineering? Drinking water supply Sewage Wastewater treatment 2) Name the different parts of the drinking water supply system? Production Storage Distribution 3) Which of the following three systems can be discerned when producing ...
Tuesday, September 24, 2013 at 11:55am

Engineering
Steel column is 80 feet tall. Column is a W 14 x 730(wide-flange beam) The cross sectional area is 215 sq in. Supports a floor load of 6600 K. Determine the stress in the column and how much it will shorten due to the 6600K load. (Assume E= 29,000,000 lb/sq in)
Saturday, September 14, 2013 at 3:07pm

ENGINEERING ECONOMY
A man bought a house and a lot worth P300000. The annual amortization of the house and lot is P34200. Determine rate of interest he was changed?
Monday, September 9, 2013 at 4:43am

Environmental Engineering
The two ponds in the figure below can be modeled as completely-stirred tank reactors (CSTRs) in series. The first-order decay rates for each pond are different but the inflow and outflow rates and volumes for the two ponds are the same. a. Write a mass-balance (differential) ...
Monday, August 26, 2013 at 12:16pm

engineering
A thermometer is used to measure the temperature of a gas flow through a pipe. The gas temperature is read at 500°C and the duct temperature is measured to be 350°C. The thermometer is cylindrical with a diameter of 1 mm and an intrusion length of 1 cm. It can be ...
Wednesday, August 14, 2013 at 11:17am

Vocabulary
choose the term that matches the definition. building and construction. a.architecture b. engineering c.nursing d.statistics b
Saturday, July 20, 2013 at 10:34pm

Vocabulary
Building and construction A. Architecture B. Engineering C. Nursing D. Statistics im pretty sure its A
Wednesday, July 17, 2013 at 1:35am

Environmental Control Engineering
A development in a town was designed to accomodate 10,000 people, in 2,000, 5 units building, each person in this settlement uses an average of 5 gallons of water per day for washing purposes. As an engineering technician you are required to design a waste water treatment ...
Monday, July 8, 2013 at 9:24pm

element of chemical engineering
the specific internal energy of a fluid is 200 cal/g .if the fluid leaves a system at a flow rate of 5 g/min ,at what rate does it transport internal energy out of the system?
Wednesday, July 3, 2013 at 12:45pm

Mechanial engineering
HW7_1A: BENDING MOMENT DIAGRAMS AND STRESSES, PART I We will obtain bending moment diagrams for three beams and calculate stresses inside the beams. For each beam, take the x-axis along the neutral axis of the beam, oriented from left to right, with origin at A. HW7_1A_1 : 5.0...
Sunday, June 30, 2013 at 12:19pm

ECONOMICS/ACCOUNTING/BUSINESS
PLS HELP, BEEN STUCK FOREVER ON TWO QUESTIONS, THIS IS ONE : There are usually no costs for the first 3 years, but thereafter maintenance is re- quired for restriping, weed control, light replacement, shoulder repairs, etc. For one section of a particular highway, these costs ...
Monday, June 24, 2013 at 2:22am

Engineering science
A lorry has a mass of 5640kg and accelerates uniformly from rest to reach a velocity of 100km/h in 10s. Determine the acceleration of the lorry. Determine the force needed to accelerate the lorry
Friday, June 21, 2013 at 10:26am

Mechanical Engineering
a tennis ball was held 4.5 ft above the surface of a tennis court and was thrown vertically downward with an initial velocity whose magnitude was 12 fps. determine the magnitude of the velocity of the ball just before it struck the surface of the court
Friday, June 21, 2013 at 12:38am

Engineering
A 10.0 Kg block is released from point A in the figure below. The block travels along a smooth frictionless track. It makes a collision with stationary 10 kg ball. The ball moves forward with speed of 2 m/s. a) What is the speed of the block at point C? b) What is the velocity...
Friday, June 7, 2013 at 1:39pm

engineering
Let’s suppose the message x(t) is an analog signal shown in the figure below. a) Draw the block diagrams of the system which converts the analog message signal x(t) to a pulse modulated signal. b) Draw the sampled signal with the sampling frequency fs=2khz c) Carry out ...
Thursday, June 6, 2013 at 1:01pm

Engineering
A tapered thin-wall circular shaft has constant wall thickness, t, length L, and diameters linearly varying between dA at the support A(x=0) and dB at its free end B(x=L). The shaft is homogeneous with shear modulus G HW6_1A : 20.0 POINTS Obtain a symbolic expression for the ...
Wednesday, June 5, 2013 at 5:04pm

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