Homework Help: Science: Engineering

Recent Homework Questions About Engineering

Biology
Have I got the correct answers for all these questions? 1. Explain what genetic engineering is and how it can be applied to everyday life. Ans- Genetic engineering is a technology in which the genome of a living cell is modified for medical or industrial use. It’s used in...
Friday, April 16, 2010 at 1:58pm

engineering
a data with an availability of 93.4% is accessed via a network with an availability of 99.2%. on average for how much time in a week would a user be unable to retrive data from database.
Thursday, April 15, 2010 at 2:37pm

engineering
in a proposed telesurgery application the image will be transmitted at 2*10^8m/s ovwe a roundtrip distance of 740km, the compression and decompression process for the images will take a total of 60m/s. what is the largest permissible value for the sources of delay if total ...
Thursday, April 15, 2010 at 2:35pm

Biology
Need help answering these questions-- How can genetic engineering be applied to everyday life? How can genetic altering benefit the society of today and future societies? What areas of life could this manipulation of genes cause? Thanks -MC
Saturday, April 10, 2010 at 11:07am

Electrical Engineering
At what frequency is a 0.0001 uF capacitor operating if its reactance is 45 k ohm?
Sunday, April 4, 2010 at 1:34am

Electrical Engineering
what is one time constant of a 47 micro farad capacitor in series with a 120 kilo ohm resistor?
Saturday, April 3, 2010 at 10:42pm

MATH (CALCULUS) PLZ HELP
A common problem encountered by the oil industry is to determine the most cost-effective route to connect various wells in an oil fertile area. The attached map is a copy of a section of a U.S. Geographical Survey contour map with a wetland area outlined. An existing oil well...
Thursday, April 1, 2010 at 5:50am

caculus (pipeline)
A common problem encountered by the oil industry is to determine the most cost-effective route to connect various wells in an oil fertile area. The attached map is a copy of a section of a U.S. Geographical Survey contour map with a wetland area outlined. An existing oil well ...
Wednesday, March 31, 2010 at 10:07pm

Financial Engineering
Describe a potential arbitrage strategy if a put price is the same as the negative of a forward if the strike are the same. You need to specify the number of units you would long/short for each instrument, initial cash flow, and final cash flow. An arbitrage oppotunity arises ...
Friday, March 12, 2010 at 3:45am

Biology
23. A medical condition that can be treated by using proteins produced through genetic engineering is a. depression b. multiple sclerosis c. hemophilia d. all of the above 26. Endosymbiosis best explains the possible evolutionary beginnings of a. prokaryotes b. cyanobacteria c...
Monday, February 8, 2010 at 7:32pm

Biology
17. When errors in nucleotide sequencing occur, a. DNA polymerases replaces the incorrect nucleotide with the correct nucleotide b. enzymes dissolve the incorrect nucleotide so DNA polymerase can add the correct one c. purines replace pyrimidines in the DNA molecule d. DNA ...
Monday, February 8, 2010 at 5:32pm

electrical and electronic engineering
investigate the impact of photovoltaic system on low voltage distribution network in Malaysia.
Thursday, February 4, 2010 at 9:44am

Environmental Science
are these correct? 29. A common feature of thermal pollution and artificial eutrophication is that they both a. ave sources that are idfficult to identify and control b. cause large mats of algae to bloom in fresh water c. are a result of power plants and other industrial ...
Monday, February 1, 2010 at 1:37pm

Environmental Science
29. A common feature of thermal pollution and artificial eutrophication is that they both a. have sources that are difficult to identify and control b. cause large mats of algae to bloom in fresh water c. are a result of power plants and other industrial activity d. decrease ...
Wednesday, January 27, 2010 at 5:48pm

History
All of the following account for nativist sentiment against the New immigrants of the late 19th century EXCEPT that the immigrants a. practiced different religions b. had different languages and cultures c. were willing to work for lower wages than were native born workers d. ...
Tuesday, January 26, 2010 at 11:19pm

Science
Engineering Science Project ideas and some thing cool interesting and new not that has been popular as a science project!!!!!!!!!!!!! Plz!!!!!!!!!!!!!!
Sunday, January 24, 2010 at 2:07pm

Technology
13. The _____ contains production information about each part used to make a prodcut. a. bill of materials b. specification sheet c. location dimension d. engineering drawing I'm not 100% sure about this question. I know for sure it's not C. I think it is A. Does ...
Tuesday, December 29, 2009 at 11:56am

7th grade science
What is an example of genetic engineering helping people ?
Tuesday, December 15, 2009 at 4:45pm

7th grade science
what is an example of genetic engineering helping people ?
Sunday, December 13, 2009 at 6:39pm

metal engineering and maintenance
what are the two classes of metals? explain what are the differences between iron and steel? differentiate between brass and bronze? give an application for each of the above?
Thursday, November 26, 2009 at 9:38am

Salary Related - Stats question
The monthly starting salaries of students who receive engineering degrees have a standard deviation of $600. What sample size should be selected so that there is 0.95 probability of estimating the mean monthly income within $150 or less?
Wednesday, November 25, 2009 at 1:58pm

Cost Accounting
28) LO.4 (EVA) Mountain Mist Inc.’s cost of capital is 11 percent. In 2008, one of the firm’s division generated and EVA of $1,130,000. The fair market value of the capital investment in that division was $26,500. How much after-tax income was generated by the ...
Sunday, November 15, 2009 at 6:14pm

finding online article
I need help finding an article online. It has to be on biomedical engineering related or science related. And the article has to talk about 3D or 2D or 2.5D imaging methods. I found a 2D and 3D article. But I can't find one about a 2.5D imaging sensor or machine. please help
Wednesday, November 4, 2009 at 9:51pm

chem engineering
Mass balance on an intravenous injection (IV) bag A nurse sets up an IV drip for a patient consisting of normal saline; assume that this is an aqueous solution containing 150mM salt. The saline drip is supplemented with an antibiotic solution; assume that this is an aqueous ...
Wednesday, October 28, 2009 at 10:03pm

engineering
Water PUMP: this question is about how to stop two bearings from moving sideways on a shaft that has to support a rotating impeller at one end; the bearings and part of the shaft are in a bearing housing. the shaft is also partly supported by the pump casing (in which the ...
Thursday, October 22, 2009 at 5:22pm

physics
As a civil engineering intern during one of your summer 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 ceefficient of static friction between the road and rubber is 0.080, a car at rest must...
Wednesday, October 14, 2009 at 10:39am

Engineering
The boat is to be pulled onto the shore using two ropes. If the resultant force is to be 400N, directed along the keel, determine the magnitudes of forces T and P acting in each rope and the angle theta of P so that the magnitude of P is a minimum. T acts at 30 degrees from ...
Tuesday, October 13, 2009 at 11:46am

Engineering Materials
Using mechanics of materials principles (ie. equations of mechanical equilibrium applied to a free-body diagram), derive the following equations. sigma' = sigma cos^2 θ = sigma(1+cos 2θ / 2) and tau = sigma sin θ cos θ = sigma( sin2θ / 2)
Thursday, October 8, 2009 at 1:04pm

Engineering Physics
A car and a train move together along straight, parallel paths with the same constant cruising speed v(initial). At t=0 the car driver notices a red light ahead and slows down with constant acceleration -a(initial). Just as the car comes to a full stop, the light immediately ...
Wednesday, September 16, 2009 at 11:36am

Engineering C source code
Prompt the user for the inner and outer diameter and thickness of the washer to be entered in cm. Then prompt for the material density in grams per cubic cm (g/cm^3) and the number of washers in the batch. Finally, print out the expected weight in kg. Make sure that 3 digits ...
Wednesday, September 16, 2009 at 1:07am

world geography check
The great rift valley was formedin part by: A)shifting tectonic plates B)erosion by massive glaciers C)wind erosion D)human engineering my choice is a
Wednesday, September 9, 2009 at 1:54am

science
Describe how genetic engineering has been used to improve plants.
Wednesday, August 12, 2009 at 5:42am

Engineering
Based on the force vector that is hown, I have to determine the x and y vector components. |\ fy=?| \ f= 200 lb | \ |___\ fx=? How do I do this with only one side given and the given 90 degree angle
Saturday, August 8, 2009 at 12:03am

Engineering
There is a shape that has a right triangle on top of a square, I need to find the area of the shape H1|\ | \ | \ | |H2 |___| B B=20Ft H2= 75lb/ft H1= 150 lb/ft I got 600 for the total area, am I close
Friday, August 7, 2009 at 11:54pm

Engineering
A person rappels down a cliff. The person uses a 0.5 inch diameter rope, creating a 170-lb internal force. What is the normal stress in the rope. I got 340 by diving 170 from .5 is this right?
Friday, August 7, 2009 at 11:23pm

engineering materials
can someone teach me how to make an introduction? by the way what must composed of your introduction? I'm making report for this subject about electric refining process in making steel. And I have no idea where to start. can you please help me. thanks
Saturday, August 1, 2009 at 12:44am

English
If 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) Direct, simple language b) Technical jargon c) Formal language d) Pompous language
Saturday, July 11, 2009 at 8:52am

engineering materials
can someone help me to find some good source about the topic: stress, strain, young's modulus of elasticity and shearing stress? pls. help me. thanks
Tuesday, July 7, 2009 at 9:04am

English
Your project design has been approved by the management. The engineering team is about to start production of the new line. You want to make sure this process goes as smoothly as possible. You need to come up with a communication plan to address two of the following aspects of...
Wednesday, June 17, 2009 at 7:56pm

english
Your project design has been approved by the management. The engineering team is about to start production of the new line. You want to make sure this process goes as smoothly as possible. You need to come up with a communication plan to address two of the following aspects of...
Tuesday, June 16, 2009 at 8:11am

Social Studies
Outline the achievements of Henry VIII of england: Henry VIII was Henry VII's second son. At a young age he seemed the ideal Renaissance monarch.He was very good looking and had a good personality. In pratical matters he made himself an expert in government affairs and,...
Saturday, June 13, 2009 at 7:23pm

tissue engineering
in tissue engineering, why are fibrous fabrics or polymers important? I know that some have slow degradation and some polymers can be controlled in certain conditions, but I want more detail.
Saturday, June 6, 2009 at 5:02pm

Engineering
Based on the following labor/material/costs/revenue structure, develop a production plan to maximize profit. You have 40 hours per week at the shown rate at each position type and can plan on 15% additional hours at overtime rates of 150%. You have room for a total of 8 ...
Sunday, April 19, 2009 at 10:39pm

Engineering
Can someone please help me with this problem? In order to reduce the material cost, an engineer decides to use a hybrid beam instead of an all-carbon fiber beam. Both beams have the same overall dimensions with rectangular cross-sections. The hybrid beam contains carbon fibers...
Tuesday, April 14, 2009 at 7:43pm

psychology
1 Ann, a college freshman, has chosen engineering as her major because her father told her that a degree in engineering would lead to better-paying jobs upon graduation. She is most likely at which of Marcia's identity statuses? A foreclosure B moratorium C diffusion D ...
Tuesday, April 7, 2009 at 12:41pm

Electronic Engineering
What are the advantages and disadvantages of using a cause register or vectored interrupts from a hardware point of view.
Monday, March 30, 2009 at 9:49am

science help
what is the technology used in genetic engineering called?
Thursday, March 26, 2009 at 2:19am

science
what is the technology used in genetic engineering called?
Wednesday, March 25, 2009 at 10:56pm

science
I have read many answers but cant seem to get this right the question what is the technology in genetic engineering
Wednesday, March 25, 2009 at 10:48pm

accounting
Shelton Engineering completed the following transactions in the month of June. a. Shania Shelton, the owner, invested $105,000 cash, office equipment with a value of $6,000, and $45,000 of drafting equipment to launch the business. b. Purchased land worth $54,000 for an office...
Wednesday, March 18, 2009 at 3:29pm

Check
13. Giganeers faces competition from many other companies that also provide engineering consulting services. In order to gain more business, Gig has tried to convince potential clients that his company offers better service than the competition. He has advertised heavily in ...
Sunday, March 8, 2009 at 9:36pm

Math/Standard and scientific notation
Express each measure in standard form. (One more thing by the way you need this few prefixes) Tera= 10 to the 12th power Giga= 10 to the 9th power Mega= 10 to the 6th power Kilo= 10 to the 3rd power Pico= 10 to the -12th power Nano= 10 to the -9th power Micro= 10 to the -6th ...
Wednesday, February 25, 2009 at 4:57pm

geo HELP!!
could u please help me put this into my own words?? This sector is often divided into light industry and heavy industry. Many of these industries consume large quantities of energy and require factories and machinery to convert the raw materials into goods and products. They ...
Tuesday, February 24, 2009 at 6:36pm

Engineering
5. Two pieces of steel are held together with six bolts. One end of the first piece of steel is welded to a beam and the second piece of steel is bolted to the first. There is a load of 54,000 pounds applied to the end of the second piece of steel. The tensile strength of ...
Thursday, February 12, 2009 at 11:27pm

Engineering
Determine the required nominal diameter of a threaded steel rod to carry an axial load of 16,000 pounds in tension if the tensile stress of 20,000 psi is permitted.
Thursday, February 12, 2009 at 10:35pm

Engineering Economics
Hi there, I am having some trouble solving this problem, can you give some guidance as to the solution. What is the amount of 10 equal annual deposits that can provide five annual withdrawals, when a first withdrawal of $1000 is made at the end of year 11, and subsequent ...
Tuesday, January 27, 2009 at 10:08pm

Economics
Hi there, I am having trouble with this problem.Can you give me some guidance. In planning the publication of a new engineering economics textbook, the publisher has identified the following fixed and variable costs. Fixed Costs Overhead- $10,000 Editing and Typesetting- $100,...
Wednesday, January 21, 2009 at 8:30pm

PHYSICS
A house is built on the top of a hill with a nearby slope at angle 45° slope (Figure 6-55). An engineering study indicates that the slope angle should be reduced because the top layers of soil along the slope might slip past the lower layers. If the static coefficient of ...
Saturday, December 13, 2008 at 10:17pm

physics
A house is built on the top of a hill with a nearby slope at angle 45° slope (Figure 6-55). An engineering study indicates that the slope angle should be reduced because the top layers of soil along the slope might slip past the lower layers. If the static coefficient of ...
Saturday, December 13, 2008 at 2:39pm

engineering
using air pressure, a ball of 0.5kg is forced to move through the tube lying in the horizontal plane and having the shape of a logarithmic spiral. If the tangential force exerted on the ball due to the air is 6N, determine the rate of increase in the ball's speed at the ...
Saturday, November 15, 2008 at 1:02pm

engineering
a boy of mass 40kg is sliding down the spiral slide at a constant speed such that his position is measured by theta=(0.7t) rad and z=(-0.5t) m where t is in seconds. How do you find the components of forces Fr, Ftheta and Fz which the slide exerts on teh boy at the instant ...
Saturday, November 15, 2008 at 1:01pm

Engineering
what is a reactance modulator in GSM.Not more than 2 pages.
Thursday, November 13, 2008 at 7:12pm

science
how has genetic engineering helped people
Wednesday, November 5, 2008 at 8:47pm

Engineering-Water Use
Can u help us find some websites that will help us about the topic about water use conservation? We need to build a essay. What CAN u do?
Wednesday, November 5, 2008 at 3:07pm

Engineering/Algebra
A cardboard tube has a failure stress of 4,960,000 N/m^2 and an axial stress of 75 N/cm^2, find the factor of safety of the tube. Is the answer 66133.33
Tuesday, November 4, 2008 at 7:18pm

Engineering/Algebra
A cardboard tube is loaded with a 15.3 N axial load. The tube has an outside diameter of 2.5 cm and a wall thickness of .035 cm. Find the axial stress in the cardboard tube. Is the answer 75 N/cm^2? If so can you show me your way of getting to this answer.
Tuesday, November 4, 2008 at 7:12pm

Engineering/Algebra
A balsa wood glider wing has the following properties during flight: Thickness= 0.3175 cm I= 0.0733 cm^4 Moment= 4.2 N-cm Find the bending stress in the wing. Express your answer in N/m^2. Is the answer either 9.096 N/m^2 or 18.192 N/m^2
Tuesday, November 4, 2008 at 7:10pm

Engineering/ Algebra
A balsa wood glider wing has the following properties during flight: Thickness = 0.3175 cm I = 0.0733 cm^4 Moment = 4.2 N-cm Find the bending stress in the wing. Express your answer in N/m^2. Is the answer 9.09 N/m^2 or 18.19 N/m^2
Tuesday, November 4, 2008 at 6:48pm

english
Create and describe your own Utopia, Including its geography, laws and customs?i have two but i dont know if youre allowed to do that one is here, anywhere, different laws based around the fact that people should be set on a path of self-actualization and that everyone within ...
Sunday, November 2, 2008 at 12:42am

Engineering Economy
Compare the following alternatives on the basis of their capitalized cost at an interest rate of 10% per year. Petroleum Based Feedstock First cost, $ -250000 Annual operating cost, $/year -130000 Annual revenues, $/year 400,000 Salvage value, $ 50,000 Life,years 6 Inorganic-...
Wednesday, October 1, 2008 at 2:06am

Engineering economy
General Electric issued 1000 debenture bonds 3 years ago with a face value of $5000 each and a bond interest rate of 8% per year payable semiannually. The bonds have a maturity date of 20 years from the date they were issued. If the interest rate in the market place is 10% per...
Wednesday, October 1, 2008 at 1:43am

Engineering Economy
Lennon Hearth Products manufactures glass door fireplace screens that have two types of mounting brackets for the frame. And L-shaped bracket is used for relatively small fireplace openings, and a U-shaped bracket is used for all others. The company includes both types of ...
Wednesday, October 1, 2008 at 1:41am

engineering
Im doing a project about heat transfer in the house. One of the aspect i have to look at is "cladding". Can you suggest any good websites that introduce what "cladding" is and how it works?
Saturday, September 6, 2008 at 8:20am

engineering
wat is the SI form? a)Mg/mN B)MN/(kg*ms)
Wednesday, September 3, 2008 at 9:08pm

engineering
what is the SI form A)MN/ks^2 B)kN/ms
Wednesday, September 3, 2008 at 9:05pm

engineering
evaluate each of the following and express with SI units having an appropiate prefix: (1) (50mN)(6GN) (2) (400mm) (0.6MN)^2 (3) 45 MN^3/900Gg
Wednesday, September 3, 2008 at 9:01pm

engineering
convert 65 slug/ft^2 to appropriate SI units
Wednesday, September 3, 2008 at 8:58pm

engineering
represent each of the following to three significant figures and express each answer in SI units using an appropriate prefix: a)1568(10^5)mm b)0.005 63 mg
Wednesday, September 3, 2008 at 8:57pm

10th grade
Engineering Foundations 2 Calculations converstions How do I put this combination in the correct SI form? MN/ks2 kN/ms
Wednesday, September 3, 2008 at 7:45pm

Engineering Foundations 2
engineering foundations 2 calculations and converstions question. How do I round off the following number to three significant figures? Or can you give me an example of how to round off number 3. 4555N Would I round off this to be 4555N to be 4555.00N 3. 4555N
Wednesday, September 3, 2008 at 7:40pm

10th grade
engineering foundations 2 calculations and converstions question. How do I round off the following numbers to three significant figures? Or can you give me an example of how to round off number 1. 4.65735 m 2. 55.578 s 3. 4555N 4. 2768 kg
Wednesday, September 3, 2008 at 7:33pm

Engineering
Two 1 km fibers are spliced together. Each fiber has a 5 db loss and the splice adds the 1 db of loss. If the power entering is 2mW, then how much power is delivered to the end of this combined transmission line ?
Monday, September 1, 2008 at 4:53pm

Engineering
A receiver requires 10 mW as input power. If all the system losses add up to 50 db, then how much power is required from all the source ?
Monday, September 1, 2008 at 4:50pm

statistics
The head of a computer science department is interested in estimating the proportion of students entering the department who will choose the new computer engineering option. A preliminary sample indicates that the proportion will be around 0.25. Therefore, what size sample ...
Thursday, August 14, 2008 at 12:08pm

Biololgy
Genetic engineering a. Allows the use of bacteria as production factories for a number of molecules b. Relies of recombinant DNA technology c. Is dependent on RNA enzymes d.Relies completely on conjugation e. a and b
Saturday, June 21, 2008 at 6:08pm

accounting help
How to prepare this entries Preparing and posting journal entries; preparing a trial balance Shelton Engineering completed the following transactions in the month of June. a. Shania Shelton, the owner, invested $105,000 cash, office equipment with a value of $6,000, and $45,...
Saturday, May 31, 2008 at 8:20pm

Social Studies
Has society become too organized? Does free will exsist? What role does chemical engineering play in society?
Tuesday, May 27, 2008 at 9:41pm

mechnical engineering
what is rankine cycle?
Wednesday, April 30, 2008 at 9:28pm

"Brave New World"
I am writing an essay after reading the first 3 chapters of "Brave New World" about how genetic engineering produced the society. What are the motives behind genetic engineering according to Huxley? Has genetic engineering "Improved" lives of the peopel in...
Monday, April 28, 2008 at 10:21am

Mechanical engineering
A bullet of mass 50 grams is fired horizontally into a wooden block of mass 0.2kg. The wodden block is suspended from the ceiling by a long string as shown in the diagram. After impact the bullet is embedded in the block and bullet and the block swing together until the block ...
Saturday, April 19, 2008 at 9:22pm

Accounting- Help Please
Accounting Help-Preparing and posting journal entries; and preparing a trial balance.? Shelton Engineering completed the following transaction in the month of June. Received a bill for rent of equipment that was used on a recently completed job. The 1,200 rent must be paid ...
Wednesday, April 16, 2008 at 11:23am

Engineering:Digital Design
Information given: 1) 2 X 8-bits input A and B 2) 1 X ?-bits function selector input 3) 1 X 8-bits output C 4) 1 bit overflow (designed as “flag O” ) Function selector are made up of: 1) A + B operation 7) A NOR B 2) A – Boperation 8) A XNOR B 3) A AND B 9) A ...
Friday, March 28, 2008 at 6:17pm

Engineering
Designation of clamper circuit: Input Square Wave is described as follow: V max : 20V V min : -15v Frequency : 10kHz Design a clamper circuit to shift its referecence point so that its reference point is -10V. Specify all component values and part numbers(if any) used in your ...
Friday, March 28, 2008 at 8:38am

Intermediate Accounting
Accounting Homework Question: Pension Amendment Case Charles Rubin is a 30-year old employee of General Motors. Charles was pleased with recent negotiations between his employer and the United Auto Workers. Among other favorable provisions of the new agreement, the pact also ...
Wednesday, March 19, 2008 at 2:47pm

engineering physics 2
A 19 m long piece of wire of density 8.34 g/m3 has a diameter of 12.593 mm. The resistiv- ity of the wire is 1.7e-8(ohm)(m) at 20 degrees celsius. The temperature coefficient for the wire is 0.0038(degrees celsius)^-1. Calculate the resistance of the wire at 20degrees Celsius...
Thursday, February 28, 2008 at 2:56pm

electricity 188
hi my name is christina and i have an electrical question i need help with. i am taking power engineering electrical 188. the question is: how much will ity cost to use 6 lamps of 100 W each if they burn for 5 hours each evening in a month (30 days). the cost of electricity is...
Sunday, February 24, 2008 at 10:22pm

art appreciation
3 pages Details: Discuss the importance of Roman construction, using the Phase Resources, as well as your text, finding examples of Roman engineering. The Romans took the arch, a rarely employed technique, and used it in buildings and bridges all over the Empire. The Romans ...
Sunday, January 20, 2008 at 12:10am

Art Appreciation
3 pages Details: Discuss the importance of Roman construction, using the Phase Resources, as well as your text, finding examples of Roman engineering. The Romans took the arch, a rarely employed technique, and used it in buildings and bridges all over the Empire. The Romans ...
Friday, January 18, 2008 at 9:57pm

art history
which alphabet goes to which meaning? faux surface _ eclecticism _ concrete construction _ verism _ vesuvius _ aqueduct _ pantheon _ equestrian portrait _ a. dome for all gods b. honest way of making art c. 1st style wall painting d. 4th style wall painting e. famous emperor f...
Sunday, January 6, 2008 at 7:10pm

What is discrete math? And is it relatively easy?
I ask because my TA recommended taking it next semester along with calc 3. My major is electrical engineering, and I might throw actuarial science into the mix too. So yeah, lots of math.
Tuesday, December 18, 2007 at 11:17pm

Science
Develop three guidelines based on the four scientific principles of sustainability for our use of genetic engineering and synthetic biology to modify species and ecosystems. I know the four scientific principles are: 1) Reliance on solar energy 2) Biodiversity 3) Nutrient ...
Sunday, December 9, 2007 at 6:41pm

Environmental Science
Develop three guidelines based on the four scientific principles of sustainability for our use of genetic engineering and synthetic biology to modify species and ecosystems. I know the four scientific principles are: 1) Reliance on solar energy 2) Biodiversity 3) Nutrient ...
Sunday, December 9, 2007 at 6:05pm

please help me with my engineering homework
what are the advantages of having an optical biopsy?
Tuesday, December 4, 2007 at 5:23pm

please help me with my engineer project
I am working on an Engineer project about Digital clock I research my project on the Digital Clock, but i could not find any webcite that has the answer to these questions 1. What your part is and how it works? 2. Companies that make this kind of equipment/material/device/...
Wednesday, November 28, 2007 at 4:01am

college essay: please revise and edit
A Silly Phobia Toward A Gorgeous Dude From Cal Poly It was a cold Thursday night in the coastal area. The Sunnyside High School AVID students were on their way back home from the field trip of visiting UCSB. We stopped in San Luis Obispo and had dinner at the IN-N-OUT burger...
Tuesday, November 20, 2007 at 12:55am

engineering science
i need names of companies that produce fiber optic cables one company is called Optic Cable Corporation i need help in finding more companies
Sunday, November 18, 2007 at 2:34am

what is an engineer
Provide a minimum of 10 characteristics typical of engineers / engineering. (three to five word phrases maximum). These are the ones i came up with so far: Question all results Proceed with contradictory data Study of the human-made world Engineers determine course of action ...
Wednesday, November 14, 2007 at 3:08am

Engineering
How does an air conditioner use the first and second laws of thermodynamics?
Sunday, October 28, 2007 at 2:23pm

Science fair
I'm desperately looking for sites that have sample science fair projects in the engineering field. If somehow you could find it in your hearts to help me answer me. Please!
Tuesday, October 23, 2007 at 5:59pm

essay intro
Biomedical is a field that saves peoples’ lives by using advanced technology in medicine. Being a biomedical engineer requires being good at solving problems in biology and medicine. Engineers design new devices and instruments to help them do research or develop new ...
Monday, October 22, 2007 at 6:21pm

Electronic Engineering
Using MATLAB..How to develop a software tool for analysis of the model distributions of a semiconductor laser diode array..??
Wednesday, October 17, 2007 at 11:22am

Chemistry
When deciding upon which fuel source used to power a vechicle, engineers often use the heat released in combustion of differning fuels to make their decision. Would you use the heat released per mole of a hydrocarbon or the heat released per gram of a hydrocarbon to make a ...
Saturday, September 29, 2007 at 5:31pm

AP Chemistry
When deciding upon which fuel source used to power a vechicle, engineers often use the heat released in combustion of differning fuels to make their decision. Would you use the heat released per mole of a hydrocarbon or the heat released per gram of a hydrocarbon to make a ...
Saturday, September 29, 2007 at 1:44pm

Engineering Economy
The football coach at the Midwestern university was given a 5yr employment contract that paid $22500 the first year and increased at an 8% uniform rate in each subsequent year. At the end of the first year's football season, the alumni agreed to buy his remaining years on ...
Monday, September 24, 2007 at 10:39am

Engineering Economy
A realtor sold a house on August 31, 1997 for $150k to a buyer in which a 20% down payment was made. The buyer took a 15yr mortgage on the property with an effective interest rate of 8% per annum. The buyer intends to pay off the mortgage owed in yearly payments starting on ...
Monday, September 24, 2007 at 10:35am

Engineering Economy
A young engineer wishes to become a millionaire by the time he is 60yrs old. He believes that by careful investment he can obtain a 15% rate of return. he plans to add a uniform sum of money to his investment program each year, beginning on his 20th birthday and continuing ...
Monday, September 24, 2007 at 10:31am

Math Essay
Can some one please do the essay or give me a website that writes custom essays Introduction Over the last thirty years, tuition at public 4-year colleges has increased by about 50%, and tuition at private 4-year colleges has increased by a whopping 110%! Where do you plan on ...
Wednesday, September 19, 2007 at 10:50am

engineering
what are some non practical uses of alternating current
Monday, August 27, 2007 at 2:03pm

electric engineering - bobpursley
Hi bob: I have a follow up question fo my previous post under heading electrical engineering If you could help me that would be great! :-) see the other post which briefly explains the drawings here: http://hyperphysics.phy-astr.gsu.edu/hbase/magnetic/elemag.html
Tuesday, August 21, 2007 at 7:35pm

electric engineering
First of all I need to let you know that I'm not an Engineering student. I'm just dabbling with it in a hobbie capacity. I recently wrapped 11 layers of 30gauge magnetic wire around a ball, approximatly 2" in diameter. Leaving a lead and starting from the top(...
Tuesday, August 21, 2007 at 2:15am

International business
Where does Sony produce and market its products? Sony was founded in 1946. It is a huge company. This is a list of its affiliated companies Sony Assurance Inc. Sony Bank Inc. Sony Broadband Solutions Corporation Sony Broadcast Media Co., Ltd Sony Chemical & Information Device ...
Thursday, August 16, 2007 at 12:31am

electrical engineering
Instructions The goal of this project is to design, simulate, build and test a simple speaker system that can connect to a portable audio device such as an mp3 player or laptop. The system has the following requirements: § Accept a standard head-phone audio jack as an ...
Thursday, August 9, 2007 at 12:53pm

algebra 2(check)
1)Choose the correct description of the system of equations:2x+3y=10 and 4x+6y=20. I got consistent/dependent 2)The first equation of the system is multiplied by 2. By what number would you multiply the second equation to eliminate the x variable by adding? 6x-5y=21 4x+7y=15 I...
Friday, July 27, 2007 at 9:57pm

inductrial engineering
The Only Organic (OO) golf complex has a first cost of $55M, annual O&M costs of $10M, salvage value in year 100 of $25M, clubhouse renovation every 10 years costing $19M (but not in year 100), and reseeding every 4 years starting in year 4 costing $8M. Additional ...
Monday, July 23, 2007 at 3:35am

environmental science
what are the benefits and drawbacks of the following: genetic engineering biological control insect birth control through sterlization insect sex attractments( pheromones) insect hormones food radiation integrated pest management Since this is not my area of expertise, I ...
Monday, July 2, 2007 at 11:22pm

writing
This is the assignment: Reread either Andy Rooney’s essay on page 96 or Sarah Penning’s essay on page. 97. Select either essay as your starting point and discuss the terms they write about. What is your reaction to the thesis of either in relation to accepted ...
Wednesday, June 27, 2007 at 12:45pm

Written Communication
Discuss how you would approach creating a negative message for a superior (such as a manager at work or an instructor) versus creating a message for a colleague, subordinate, or fellow student. Answers from previous postings: http://www.jiskha.com/display.cgi?id=117...
Wednesday, June 27, 2007 at 11:50am

Calculus - Hydrostatic Pressure
Please check my work: Find the hydrostatic pressure on one end of a water trough full of water, the end of which is a trapezoid with given dimensions: top of trapezoid = 20 feet, sides of trapezoid both = 8 feet, bottom of trapezoid = 12 feet. Depth of water = 8 feet Density ...
Tuesday, June 26, 2007 at 4:45pm

Comp.
Could anyone help me Please.. about the uses of the computer on the following fields. 1.Business 2.Arts and Films 3.Music 4.Engineering 5.Manufacturing 6.Police and Laws Enforces 7.Medicine 8.Education 9.Science and Research 10.Archeology Thanks :-) http://en.wikipedia.org/...
Sunday, June 24, 2007 at 8:39am

Math / Calculus
Hello, I was wondering if someone could help me. My calculus skills are many years rusty, however I think I have an interesting practical application of calculus in a video game. I think this could be a good real-world example on what math can solve. Could anyone help me solve...
Thursday, June 21, 2007 at 11:20am

about Engineering
I'm taking Electronics and Communication Engineering...Can you help me pls...this is my problem=First day of school the teacher ask why did you choose this course? thanks;-) Maybe you chose it because of a natural curiosity and mathematical and analytical skills you may ...
Tuesday, June 5, 2007 at 7:42am

about Engineering
Electronic and Communication Engineering is mainly Mathematical analysis, implemented in practical circuits. You have to understand higher forms of math, and think in those terms. You have to understand the imperfect models used for systems analysis. You have to understand ...
Thursday, May 24, 2007 at 6:41am

english
I'm suppose to figure out what the leg is a metaphor for in the following story. I can't figure it out. Any suggestions?! Letter from Gaza by Ghassan Kanafani Dear Mustafa, I have now received your letter, in which you tell me that you've done everything necessary ...
Tuesday, May 22, 2007 at 9:57pm

biomedical engineering
my major for college is biomedical engineering and i was looking athe salaries and they were around 50K to 80K. and i was wondering if there is a highest level you can get to by doing biomedical engineering where the salary increases to 100 thousands dollars or more. For ...
Tuesday, May 22, 2007 at 1:22am

Engineering
I need help solving the following simultaneous equations, for the values of Vo and a: 1.4 = Vo e^-32a 4 = Vo e^-6a I've never come across simultaneous equations like this (e is the base of natural logarithms, so perhaps taking logs of both sides might help, but I'm ...
Sunday, May 13, 2007 at 1:56pm

AP physics C suggestions..........thanx!
I have signed up for both AP Physics C Mech exam and E&M exam. Now I found that I don't have enough time to study for both exams (2 days left), should I give up E&M and focus on Mech? I felt that E&M is not harder than Mech, but need to remember many equations, which I can...
Friday, May 11, 2007 at 9:05pm

Calculus
What is the use of Calculus? How is it use in jobs? What jobs use Calculus? Calculus is used in engineering, economics, any physical science, and in business (e.g., actuary studies and statistics).
Saturday, May 5, 2007 at 9:27pm

Art Appreciation
Choose three examples of Roman engineering (any combination of public works and/or private houses) and provide the following information: Describe the item, including how it stands (arches, columns, vaults, free form, etc.). I need help with this question! What construction ...
Tuesday, May 1, 2007 at 11:18am

Information MGT
How can a prototype be used? Prototype are used for test and evaluation: Prototypes are useful in testing form, fit, and function. Also, sometimes, prototypes are used in the engineering of manufacturing lines for production.
Sunday, April 22, 2007 at 7:26pm

Admissio Appeal Letter, the most updated one
Plz give some helps for my appeal letter. Thanks Dear Undergraduate Admission Office, I recently received a letter from Purdue University informing me that I have been offered an admission to The College of Engineering for Summer 2007 at Purdue University Park campus because ...
Friday, April 13, 2007 at 3:27am

Admission Appeal Letter.....Plz Help.......Thanks
Dear Undergraduate Admission Office, I recently received a letter from Purdue University informing me that I have been offered admission to The College of Engineering for Summer 2007 at Purdue University Park campus because of the competitive admission. However, my former high...
Thursday, April 12, 2007 at 10:34pm

University Appeal Letter........HELP PLZ..
I applied my first choice collegefor 2007 Fall admission. But they gave me summer admission finally, which I don't want to get. So I decide to write an appeal letter to the admission office asking for fall admission. The reason why I want them to reconsider me for fall ...
Thursday, April 12, 2007 at 9:25pm

Elementary Education
Which would be a good activity to develop a child's aesthetic awarness? a field trip to an arboretum or a field trip to a factory Wouldn't it be a field trip to an arboretum to see all the woody plants for scientific and educational purposes? I suspect this question ...
Sunday, April 8, 2007 at 7:52am

Biology
Hi there, Describe the role of bacteria in biotechnology and genetic engineering. I'd appreciate the help. Thanks. Since this is not my area of expertise, I searched Google under the key words "bacteria biotechnology" to get these possible sources: http://encarta...
Monday, March 19, 2007 at 11:01pm

Zoology Question
Hi everyone, Our class is studying moogles and I was hoping that you could help me find some research materials to help me answer this week's take-home quiz questions. Here are the questions I am having difficulty with... 1) Identify the three common varieties of moogle by...
Saturday, March 17, 2007 at 11:38pm

Environmental Science
List at least two benefits and two drawbacks of each form of perst control for: Pesticides, Genetic engineering, Biological control, insect birth control through sterilization, Insect sex attractants (pheromones) Insect harmones, Food irradiation, and Intergrated Pest ...
Wednesday, March 14, 2007 at 11:06pm

science DrBob222NEED BY TOMMOROW MORNING AT 9:30!!
I need a website where you can find out about women in the field of engineering THANX :) Hope these are of some help. http://www.swe.org/check.aspx?bhcp=1 http://www.engineering.tufts.edu/wieo/index.html http://www.engineeringwomen.org/ http://www.nae.edu/nae/cwe/...
Thursday, March 1, 2007 at 6:19pm

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