Friday
January 30, 2015

# Homework Help: Science: Engineering

Recent Homework Questions About Engineering

english (theses writing)
Can you give us a topic on our thesis about civil engineering?
Friday, February 8, 2013 at 7:29am

University, Engineering Math
solve the ffg. differential equations: 1. x^3 +(y+1)^2 dy/dx=0 2. dy/dx-(1+1/x)y=y^2 3. dy/dx + ytanx=y^3sec^4x
Tuesday, February 5, 2013 at 10:27am

Intro to Computer Engineering
When solving 5x^2-50x+125=0, a space alien got x=8 for one of the two roots. What possible base could the alien be using? (Note: the coefficients are also in this base. That is 5,50,125 are all in this mystery base as well)
Thursday, January 31, 2013 at 1:29pm

Math
A mechanical engineering student wishes to inscribe a rectangle in a quarter circle of radius 2.00 cm. Determine the dimensions of the rectangle that will give it the greatest area. length in cm = height in cm = My attempt on find the relationship between the rectangle and the...
Tuesday, January 29, 2013 at 8:45am

Engineering Math
A Theme Park site is being designed. It will occupy a rectangular piece of land 800m by 600m. There are to be 4 particularly noisy rides. The ‘Drumbeat’ uses music which reaches a level of 95dB(A). The ‘Bigdrop’ generates screams which can reach 98dB(A). ...
Monday, January 28, 2013 at 10:05am

Engineering Math
A Theme Park site is being designed. It will occupy a rectangular piece of land 800m by 600m. There are to be 4 particularly noisy rides. The ‘Drumbeat’ uses music which reaches a level of 95dB(A). The ‘Bigdrop’ generates screams which can reach 98dB(A). ...
Monday, January 28, 2013 at 10:01am

engineering
the pringles manufacturing company tells you that they are switching to a potato supply that has a higher moisture content than those used previously. The new supply, after being mashed an cooked, prior to drying for pringles production, now contains 70% moisture content. they...
Thursday, January 17, 2013 at 11:27am

engineering
Your friend, a 75 kg mountain climber is suspended from a cliff by a rope. Calculate the tension in the rope, in Newtons, when you lift your friend to safety. If the rope can withstand 1.25 kN of stress per square centimeter of cross-sectional area, what minimum diameter of ...
Thursday, January 17, 2013 at 11:17am

7th grade science ASAP
1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point) genotype; phenotype genome...
Wednesday, January 16, 2013 at 8:55pm

1. How many chromosomes do human sex cells have? (1 point) 22 43 46 23 2. The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point) genotype; phenotype genome...
Wednesday, January 16, 2013 at 8:21pm

SOCIAL STUDIES URGENT!!
1. When people talk about natural resources, they usually mean (1 point) vegetation. water. minerals. all of the above 2. Geothermal energy is considered a (1 point) fossil fuel. renewable resource. nonrenewable resource. recyclable resource. 3. Minerals, coal, and natural ...
Wednesday, January 16, 2013 at 1:16am

engineering mechanics
A person A is trying to keep his balance while on a sled B that is sliding down an icy incline. Let mA = 78kg and mB = 25 kg be the masses of A and B, respectively. In addition, let the static and kinetic friction coefficients between A and B be μs = 0.4 and μk = 0....
Monday, December 31, 2012 at 7:58pm

maths
5. There are two groups of subjects one of which contains 5 science subjects and 3 engineering subjects and the other consists of 3 science and 5 engineering subjects. An unbiased die is cast. If the number 3 or number 5 turns up, a subject is selected at random from the first...
Friday, December 28, 2012 at 4:00am

engineering economic
Ahmad is considering investing RM2000 to Ali's project at an interest rate 6% compound annually for 5 years or investing RM2000 to Rosli at 7% per year simple interest for 5 years. From your point of view which option is better and state your reason
Tuesday, December 18, 2012 at 4:45pm

Biology
Suppose you are a scientist trying to help people who cannot produce an enzyme needed for proper digestion. How could you use genetic engineering techniques to make transformed bacteria that produce the enzyme?
Monday, December 17, 2012 at 5:17pm

Fundamental Of Chemical Engineering
If a sulfuric acid plant is to produce 10 ton/day of 98% sulfuric acid, How much sulfur is needed, how much air is required and how much water is used?
Saturday, December 15, 2012 at 11:30am

Fundamental Of Chemical Engineering
If a sulfuric acid plant is to produce 10 ton/day of 98% sulfuric acid, How much sulfur is needed, how much air is required and how much water is used?
Saturday, December 15, 2012 at 11:11am

biology
genetic engineering can provide a variety of advantages and disadvantages to today's society. what are current scientists more likely to learn from transgenic animals than from transgenic bacteria or transgenic plants?
Thursday, December 13, 2012 at 2:52pm

1. A Punnett square shows you all the ways in which ____ can combine. (1 point) alleles eggs sperm colors 2. Mendel called plants that received different alleles for a trait from each parent ____. (1 point) hybrids dominant genotypes phenotypes 3. Which is a possible genotype ...
Wednesday, December 12, 2012 at 10:27pm

civil engineering
the propane gas tank has an inner diameter of 1500mm and wall thickness of 15mm. If the wall is pressurized to 2MPa, determine the absolute maximum shear stress in the wall of tank.
Tuesday, December 11, 2012 at 7:33am

Science help needed
Posted by This Girl on Thursday, December 6, 2012 at 1:41pm. 1. __________ is one type of genetic engineering, in which a normal allele is placed into a virus. (1 point) A color blind test Down syndrome Gene therapy Polygenic inheritance 2. Human insulin can be produced by ...
Thursday, December 6, 2012 at 4:43pm

This is Urgent Science
1. __________ is one type of genetic engineering, in which a normal allele is placed into a virus. (1 point) A color blind test Down syndrome Gene therapy Polygenic inheritance 2. Human insulin can be produced by _______, which introduces DNA from one organism into a _______...
Thursday, December 6, 2012 at 2:52pm

Science
1. __________ is one type of genetic engineering, in which a normal allele is placed into a virus. (1 point) A color blind test Down syndrome Gene therapy Polygenic inheritance 2. Human insulin can be produced by _______, which introduces DNA from one organism into a _______...
Thursday, December 6, 2012 at 1:41pm

engineering
Determine the resultant force and its inclination with ox
Tuesday, November 20, 2012 at 5:26am

Chemical Engineering: Raoult's Law
A binary mixture of benzene and styrene is kept in a closed vessel at equilibrium such that both liquid and vapor phases co-exist. The total amount of moles in the vessel is 100. The total moles of benzene that is distributed in the liquid and vapor phases is 35. The ...
Sunday, November 18, 2012 at 8:36am

engineering
a bolt located 50mm from the center of an auto wheel is tightened by the couple shown for .10 seconds. determine the resulting angular velocity of the wheel if the wheel has a radius of gyration of 250 mm and a mass of 19 kilograms
Saturday, November 17, 2012 at 3:45pm

structural engineering
Fig P9 shows a drawbridge being rasied by a cable EI. The structure is a loaded truss consisting of a pinned assembly of members(links) joined at their ends designed to from a rigid structure. The four joint loadings shown result from the weight of the roadway. Calculate the ...
Saturday, November 17, 2012 at 3:55am

Chemical Reaction Engineering
The following elementary first-order reactions occur at constant density: k1 k2 A --> B --> C k1 = 5 hr-1 k2 = 4 hr-1 CA0 = 1 mol/lit CB0 = CC0 = 0 v0 = 20 m^2/min Find the maximum production rate of B in moles per minute and the optimum  for (a) a plug flow reactor...
Thursday, November 15, 2012 at 12:36pm

Physics
An advertising firm has contacted your engineering firm to create a new advertisement for a local ice-cream stand. The owner of this stand wants to add rotating solid cones (painted to look like ice-cream cones, of course) to catch the eye of travelers. Each cone will rotate ...
Tuesday, November 13, 2012 at 9:09pm

operating system
Case 2-2: Comparing Word-Processing Applications You see an opportunity to possibly save your company money by adopting the OpenOffice suite for the new PCs in the Engineering Department. Your boss is interested in your suggestion, but wants to see a list of pros and cons for ...
Sunday, November 11, 2012 at 6:24pm

engineering
how many btu's does it take to raise one pound of water at 32 degrees f to the boiling point at 14.7 psia and then to steam?
Sunday, November 11, 2012 at 4:08pm

Engineering
If you have a 300 ohm transmission line terminated with an antenna that presents a (400 ohm - j 600 ohm) load impedance: What is the normalized load admittance? (I come up with 1.5 - j 2 but am uncertain if correct) How far from the load should a short circuit stub be placed ...
Saturday, November 10, 2012 at 4:33pm

chemical reaction engineering
Propane steam reforming over an alumina supported Ni metal catalyst: C3H8 (g) + H2O (g) → CO2 (g) + H2 (g) is proposed to follow these mechanisms: C3H8 + 2S1 ↔ C2H5-S1 + CH3-S1 (M1) H2O + 2S2 ↔ OH-S2 + H-S2 (M2) CH3-S1 + OH-S2 → CH3O-S1 + H-S2 (M3) CH3O...
Tuesday, November 6, 2012 at 7:51am

Engineering Problem Solving
if a car can accelerate at 7 meters/second, what will its 0-60 mph time be?
Sunday, November 4, 2012 at 5:40pm

personal statement
this is my personal statement. plese check my grammar and what other stuff i can add or remove? thanks Ever since I was a little kid and till a year ago, I really didn’t know what I wanted to be in life. I imagined myself to be a teacher when I was 8 years old. As I grew ...
Friday, November 2, 2012 at 2:54pm

Engineering maintenance
an undamped mass spring system is with mass of 12kg and stiffness of 15N/mm,a)determine the natural frequency and the period of the free motion of the system b)determine the amplitude of displacement A and the phse shift for the initial conditions x0=2mm,v0=-1mm/s
Monday, October 29, 2012 at 2:36am

engineering
A string is fit snugly around the circumference of a spherical hot air balloon. More hot air is added (probably by a prominent scientist’s lecture) and it now takes an additional 12.4 feet of string to fit around the circumference. What is the increase in diameter?
Wednesday, October 17, 2012 at 4:43pm

CVP Analysis - Business Math
Engineering estimates show that the variable cost of manufacturing a new product will be $35 per unit. Based on market research, the selling price of the product is to be$120 per unit and variable selling expense is expected to be $15 per unit. The fixed costs applicable to ... Tuesday, October 16, 2012 at 6:25pm physics plz tell me in which website can I get free engineering notes for first year B.E? Tuesday, October 16, 2012 at 10:07am Engineering Fund. A large box whose mass is 19.0 kg rests on a frictionless floor. A mover pushes on the box with a force of 235 N at an angle 34.8° below the horizontal. Draw the box's free-body diagram and use it to determine the acceleration of the box. m/s2 Thursday, October 4, 2012 at 5:38pm marketing Binomial probability distributions are used in business, science, engineering, and other fields. Suppose you work for a marketing agency and have to create a television ad for Brand A toothpaste. The toothpaste manufacturer claims that 40% of the toothpaste buyers prefer Brand... Thursday, September 27, 2012 at 1:48pm Physics As a civil engineering intern during one of your summers in college, you are asked to design a curved section of roadway that meets the following conditions: When ice is on the road, and the coefficient of static friction between the road and rubber is 0.077, a car at rest ... Wednesday, September 26, 2012 at 8:31pm Physics A group of engineering students constructs a slingshot to launch water balloons. The angle of launch is 30° and the initial velocity of the balloon is 14 m/s. The students launch a balloon from the roof of a building and the balloon lands 42 m away from the building. How ... Friday, September 21, 2012 at 12:29am physics A group of engineering students constructs a slingshot to launch water balloons. The angle of launch is 30° and the initial velocity of the balloon is 14 m/s. The students launch a balloon from the roof of a building and the balloon lands 42 m away from the building. How ... Friday, September 21, 2012 at 12:25am Intro T Electrical Engineering A solid metal sphere with radius 0.430{\rm m} carries a net charge of 0.210{\rm nC} . Find the magnitude of the electric field at a point 0.112{\rm m} outside the surface of the sphere. Find the magnitude of the electric field at a point inside the sphere, 0.112{\rm m} below ... Tuesday, September 18, 2012 at 3:25pm electric engineering An aircraft has a wing span of 56 m. It is flying horizontally at a speed of 900 km/hr and the vertical component of earth’s magnetic field is 0.4 m Wb/m2. Calculate the P.D between the wing tips of the air craft Monday, September 10, 2012 at 2:50pm engineering a particle falling under gravity falls 39m in certain second find time required to cover the next 30 m take g=9.8 Thursday, September 6, 2012 at 12:11am engineering A steel cylinder has a volume of 0.26 L and holds 4 kg of water at 25˚C and 200 kPa. (a) Find the total mass and total volume of the system (cylinder + water). (b) Give the values for two EXTENSIVE properties and two INTENSIVE properties of the water. Wednesday, August 29, 2012 at 3:54pm General Engineering A drag line is connected to an electric motor. Crates are hooked onto the line and dragged horizontally from one location within the factory to another across a series of rollers. There is 15° between the crate and motor and a force of 500N Each crate has a mass of 200kg. ... Wednesday, August 22, 2012 at 5:49pm Engineering You have two balloons, one large (30 cm in diameter) and one small (15 cm in diameter) filled with helium. Both balloons are made of the same material (latex) and have the same unfilled material thickness (2 mm) and have a 3 cm diameter. You release both balloons at sea level ... Tuesday, August 21, 2012 at 8:38pm Society & Environment Engineering Making best use of the sources available is known as____________ (Don't have any optional answers.pls help someone to get the answer) Saturday, August 4, 2012 at 5:37am Society & Environment Engineering The concept of appropriate technology appeared first in mind____________ Don't have any option. please help someone to get the answer. Saturday, August 4, 2012 at 5:36am Society & Environment Engineering Gravin communication system is followed in _____________ a) Formal Organisation b)Informal Orgamosation c)Both a & b d)None of this Saturday, August 4, 2012 at 5:34am Society & Environment Engineering The art of getting work done from the people for the predefined goal is called a)Management b)Administration c)Both a & b d)None of these Friday, August 3, 2012 at 4:16pm Society & Environment Engineering ___________is the scientific study of human society and social interaction Friday, August 3, 2012 at 4:08pm Society @ Environment Engineering Capitalism believe in___________from the government Friday, August 3, 2012 at 4:05pm 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? Friday, August 3, 2012 at 2:08pm math In how many districts ways can the letters in ENGINEERING be arranged? Thursday, August 2, 2012 at 3:19am English help Question 1 Marks: 1 Davey has decided to research the history of fire engines in America. To get started he's written a list of research questions. Which of the following questions is the best research question for him to ask? a. Who holds the patent for the fire engine? b... Wednesday, July 25, 2012 at 7:06pm Engineering Physics A 4kg box is compress 50 cm on a spring (k=100 N/m) and then slides across a horizontal floor. If (u=0.4) between the box and the floor 1) How much work is done by friction as the box comes to a stop? 2) Assuming the frictional force is constant, how far will the box slide ... Sunday, July 8, 2012 at 11:24pm Engineering Physics At a location 4Re away from the center of the Earth, you release a 2kg object from rest. How fast is the object traveling when it is 2Re away from the center of the Earth? Re = 6.4 x 10^6 m Me = 6 * 10^24 m Monday, July 2, 2012 at 10:39pm Engineering Physics You want to use a spring (k=100 N/m) to send a 500-g mass up a frictionless incline (30 degree to horizontal) to arrive at a platform 3m above the ground. How far should you compress the spring? Sunday, July 1, 2012 at 7:05pm Engineering Physics You want to use a spring (k=100 N/m) to send a 500-g mass up a frictionless incline (30 degree to horizontal) to arrive at a platform 3m above the ground. How far should you compress the spring? Sunday, July 1, 2012 at 3:24am Engineering Science A bullet with a mass of 28g and travelling at 300m\s strikes a body with a mass of 14kg and which can move freely. The bullet remains in the body. At What velocity will the body start to move? Thursday, June 28, 2012 at 2:25am Essay:) Topic: Compare and Contrast the Tang and song dynasties China? The Tang Dynasties (June 18,618-June 4,907)was an imperial dynasty of china preceded by the Sui Dynasty and followed by the Five Dynasties Ten Kingdoms period. It was founded by the cifamily. In chinese history, ... Wednesday, June 13, 2012 at 3:25pm Art Could you please check if everything is correct? Thank you. 1) In 1986, Eric Drexler published “Engines of Creation”, a scientific dissemination in which shows not only the theoretical bases of nanotechnology, but also a series of speculation about the possible ... Monday, June 11, 2012 at 1:22pm Art Could you please check scientific English in this short dissertation? Thank you, Ms. Sue. 1) Conrad Waddington introduced the term epigenetics in the early 1940s. He defined epigenetics as ‘‘the branch of biology which studies the causal interactions between genes ... Thursday, June 7, 2012 at 6:52pm engineering material 1. Explain the difference between ‘eutectic’ and ‘eutectoid’. 2. Explain the terms ‘hyper-­‐ and hypoeutectoin ’and ‘hyper-­‐ and hypoeutectic Monday, May 28, 2012 at 3:57am Engineering science A stone is thrown down a well at a velocity of 20m/s. If the well is 20m deep, calculate the time taken for the stone to reach the bottom of the well. Sunday, May 27, 2012 at 4:17pm Science Here are the other sentences on the same theme I urgently need you to check. I hope you can help me. Thank you. 1) The existence of complex molecular structures present in every living system is used by Drexler to show the theoretical possibility of the design and construction... Friday, May 25, 2012 at 5:04pm english I wrote an essay because i'm apply to get into the honor's program. I'm supposed to write about who i was, who i am now, and who I would like to be. I would appreciate it if I got some feed back along with grammar correction. Is my essay even close to being okay or... Tuesday, May 22, 2012 at 1:12am ethic Contrast utilitarian and deontological approaches to a dilemma involving genetic engineering. Sunday, May 20, 2012 at 7:58pm Desktop publishing-Elements of Design Well i took this test and failed. This is the last test and i graduate. I posted [my answers] to the ones i think are right. 1. Study the following sentence, then select the answer that best describes it. THE COW JUMPS OVER THE MOON! A. Italic serifed type B. Bold roman sans ... Sunday, April 29, 2012 at 11:41am Engineering Calculus f(x)=((6x-3)/(x+6)) how do you find the intervals of decreasing and increasing...I found that there were no critical points yet I was also correct that the function increased (-I,-6) and (-6,I). I was wrong that there were no decreasing intervals though. Saturday, April 28, 2012 at 8:11pm computer network engineering a steel ball weighing 128 lb is suspended from a spring, whereupon the spring is stretched 2 ft from its natural length. the ball is started in motion with no initial velocity by displacing it 6 in above the equilibrium position. assuming no damping force, find an expression ... Sunday, April 22, 2012 at 3:44am engineering science a bale of weight 200 newtons hanged at the end of a rope.find the acceleration of the bale if the tension in the rope is 200 newtons,150 newtons,300 newtons. Tuesday, April 17, 2012 at 5:23am engineering science The spherical side mirror on a car is convex and has a radius of curvature of 25 cm. Another car is following, 20 m behind the mirror. If the height of the car is 1.6 m, how tall is its image? Monday, April 16, 2012 at 4:56am Engineering What is the upper tripper point (UTP) of a comparator with hysteresis if R1 = 47 kÙ, R2 = 68 kÙ and the maximum positive output voltage is 10V? Monday, April 9, 2012 at 8:40pm Engineering A certain OTA with a transconductance of 5000 µS has a load resistance of 10 kÙ. If the input voltage is 100 mV, what is the output current? What is the output voltage? Thursday, April 5, 2012 at 12:12pm engineering mechanics A car is travelling on a banked circular racetrack, Given that the track is banked at an angle of 16degree to the horizontal and the radius of the track is 50 metres and there are no friction forces present a) draw a free body diagram of the car b)calculate the linear velocity... Thursday, April 5, 2012 at 6:17am engineering mechanics An exercise bicycle's flywheel is 30cm in diameter and 2.5 cm thick and is constructed from steel (density=7850 kg m3) its moment of inertia is 0.156 kg m2 about its axis of rotation a) calculate the mass of the flywheel b) calculate the flywheel's radius of gyration c... Thursday, April 5, 2012 at 6:16am engineering mechanics An exercise bicycle's flywheel is 30cm in diameter and 2.5 cm thick and is constructed from steel (density=7850 kg m3) its moment of inertia is 0.156 kg m2 about its axis of rotation a) calculate the mass of the flywheel b) calculate the flywheel's radius of gyration c... Wednesday, April 4, 2012 at 2:26pm engineering mechanics A car is travelling on a banked circular racetrack, Given that the track is banked at an angle of 16degree to the horizontal and the radius of the track is 50 metres and there are no friction forces present a) draw a free body diagram of the car b)calculate the linear ... Wednesday, April 4, 2012 at 2:25pm Finance (Engineering Economics) You wish to retire at 60 and, at the end of each month thereafter for 25 years, to receive$6,000. Assume that you begin making monthly payments into an account at age 23 and continue these payments until age 60. If the annual interest rate is constant at 12 percent, how much ...
Wednesday, April 4, 2012 at 11:06am

engineering
Why people need to be engineering
Tuesday, April 3, 2012 at 8:21pm

computer science
You have been working for the XYZ Computer Corporation as an entry-level software engineering since you graduated from college last May. You have done very well so far; you are respected by management, well liked by your fellow employees , and have been assigned to a team of ...
Thursday, March 29, 2012 at 12:08pm

English
Writeacher, I need your help to check a few things. Thank you. 1) At the first time Clare didn't say if she was free, but the next day she confirmed she was able to go to the cinema. (Can you check this sentence for me?) 2) I would like to enrol at the faculty of ...
Thursday, March 22, 2012 at 1:15pm

nutrition
Making a transceiver from sccrtah is a pretty awesome project. It can take a while, though.There's a lot of theory of operation that factors in physics and engineering.I'm a radio technician, so I'm biased, but if I were a science teacher I would be amazed if ...
Wednesday, March 21, 2012 at 8:48pm

English
As Writeacher is on holiday, I need someone of you, Ms Sue, to check my paragraph. In particular, sentence 1 (?) "he had daydreamed" and sentence 2 (the whole sentence). I really hope you can help me. 1)In Chapter ten Dr Jekyll comes to the realization of the ...
Monday, March 19, 2012 at 9:42am

English
Ms Sue, here is the second and last part, concerning Stevenson's biography. Thank you very much for helping me. 1) Robert Louis Stevenson was born in Edinburgh in 1850. He spent most of his childhood in bed because of his poor health and grew up under the influence of his ...
Sunday, March 18, 2012 at 4:40pm

Engineering Science (Physics)
A platinum coil has a resistance of 3.146(ohms) at 40'C and 3.767(ohms) at 100'C. Find the resistance and the temperature coefficient of resistance at 0'C. Thanks in anticipation
Wednesday, March 14, 2012 at 4:26pm

health informatics
how is emerging technology influencing healthcare? and give an example. all what i know is that they are basiclly new technologies and my example is about tissue engineering but the problem is that i don't know how it influences the healthcare!!! so please please your ...
Saturday, March 3, 2012 at 4:02pm

engineering
in a hydralic jack 1:5 ratio piston diameter,and we apply a fofce of 25kg,what can it lift.
Tuesday, February 28, 2012 at 3:51pm

engineering
A steady, two-dimensional velocity field is given by V = (u, v) = (1.35 + 2.78x - 0.896y)i + (3.45x + cx - 2.78y)j Calculate constant c such that the flow field is irrotational.
Monday, February 27, 2012 at 8:15pm

MATH
THE HOSTEL OF AN ENGINEERING INSTITUTE HAS 320 STUDENTS AND THE FOOD STOCK FOR 80 DAYS. IF 20 STUDENTS LEAVE THE HOSTEL AFTER 20 DAYS,FOR HOW MANY MORE DAYS WILL THE FOOD LAST?
Sunday, February 26, 2012 at 1:06am

engineering
Sketch one face of a simple cubic unit cell of side a for the case when the maximum fraction of the lattice in volume is filled with atoms, and each atom is approximated by a hard sphere. (ii) What is the radius of each atom in terms of a? (iii) What is the volume of each atom...
Sunday, February 19, 2012 at 9:24am

Math, mathematics of finance
I am stuck on these two math questions. If nyone could help me solve them it would be greatly appreciated! Here is the information: Engineering estimates indicate that the variable cost of manufacturing a new product will be \$35 per unit.Based on market research, the selling ...
Saturday, February 18, 2012 at 1:23pm

Science/English
Writeacher, now that the grammar is OK, I just want to know if everything is correct from a scientific point of view. Could you please ask your science teacher, Bob Pursley? 1) After meeting with the engineer ......... we became interested in exploring the problems of water ...
Wednesday, February 15, 2012 at 12:51pm

English
I tried to reduce the sentences myself though I think you still need to revise it. Thank you very much. 1) We decided to create an effective and inexpensive filter using knowledge of genetic engineering. 2) In particular, we prepared (have prepared)a genetically modified ...
Wednesday, February 15, 2012 at 10:10am

English
Here is a presentation entitled "treatment plant from arsenic and pathogenic bacteria". I don't know how to check it as I'm not familiar with the content. I'd like you to help me check the grammar. The paragraph contain long-winded sentences with no ...
Wednesday, February 15, 2012 at 7:57am

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