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April 19, 2014

Homework Help: Science: Engineering

Recent Homework Questions About Engineering

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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

Engineering/Chemistry
m_dot = 2000 kg/h q = 111600 kJ/h T_final = 95C C_p = 3.9 kJ/(kgC)
Wednesday, September 19, 2012 at 12:01pm

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

Society & Environment Engineering
leadership
Wednesday, September 12, 2012 at 7:14am

Society & Environment Engineering
none of this
Wednesday, September 12, 2012 at 7:01am

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

Science
If you cannot figure this out on your own then you do not need to be a Chemical Engineer. Pick a different major. Question 2.2.10 Basic Principles and Calculations In Chemical Engineering
Sunday, September 9, 2012 at 2:17am

engineering
V^2 = Vo^2 + 2g*d. V^2 = 0 + 19.6*39 = 764.4 V = 27.65 m/s. d = Vo*t + 0.5g*t^2 = 30 m. 27.65t + 4.9t^2 = 30 4.9t^2 + 27.65t - 30 = 0 Use Quadratic Formula and get: Tf = 0.931 s. = Fall time.
Friday, September 7, 2012 at 7:13pm

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

Chemical Engineering
I got the same answer
Sunday, September 2, 2012 at 7:15pm

statistics
Equal Intervals between points of that scale and a true zero. Most measurement in the physical sciences and engineering is done on ratio scales. Mass, length, time, plane angle, energy and electric charge are examples of physical measures that are ratio scales. The scale type ...
Friday, August 31, 2012 at 5:54pm

Englis
As pointed out in the article, "Robotics" updated on May 23, 2012 in the World of Computer Science Journal, many different technologies are included in robotics. It combines elements such as mechanics, electronics, computer engineering, programming and artificial ...
Thursday, August 30, 2012 at 3:50pm

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

English
Is this it? http://ic.galegroup.com/ic/scic/Referenc​eDetailsPage/ReferenceDetailsWindow?fail​OverType=&query=&prodId=SCIC&windowstate​=normal&contentModules=&mode=view&displa​yGroupName=Reference&limiter=&currPage=&​disableHighlighting=true&...
Friday, August 24, 2012 at 11:51am

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

writing
Ok This is going to be my open paragraph, please check. Many different technologies are included in robotics. It combines elements such as mechanics,electronics,computer engineering, programming and artifical intelligence. Robotics is a technology that uses robots to perform ...
Friday, August 17, 2012 at 2:55pm

engineering mechanics
A body that weighs 50 lbs is placed in contact with an inclined plane surface. The coefficient of friction between the surfaces in contact is 0.25. If the angle between the inclined surface and a horizontal reference plane is 28°, what would be the angle of repose for the ...
Wednesday, August 8, 2012 at 1:38pm

Society & Environment Engineering
prehistoric people? What does your book say?
Saturday, August 4, 2012 at 12:09pm

Society & Environment Engineering
I can think of several answers: leadership, knowledge, efficiency What does your book say?
Saturday, August 4, 2012 at 12:08pm

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
Ms.Sue, Protect from force or fraud may be correct answer.pls check & revert.
Saturday, August 4, 2012 at 5:31am

Society & Environment Engineering
Ms.Sue, Sociology may be the correct answer. Pls ckeck & revert.
Saturday, August 4, 2012 at 5:28am

Society & Environment Engineering
c.
Friday, August 3, 2012 at 4:17pm

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
What are your choices? I'll be glad to check your answer.
Friday, August 3, 2012 at 4:12pm

Society @ Environment Engineering
What are your choices? I'll be glad to check your answer.
Friday, August 3, 2012 at 4:12pm

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
1) The work done by friction will equal the initial potential energy of compression in the spring, but will be of the opposite sign. Work is done against friction, not by it. 2) (1/2)kd^2 = M*g*u*X d is the initial spring compression. g is the acceleration of gravity M is the ...
Monday, July 9, 2012 at 12:39am

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
PEi = - GMem/4Re = KEf + PEf = KEf + [- GMem/2Re] So KEf = GMem/2Re - GMem/4Re or (1/2)m v^2 = GMem/2Re v^2 = G*Me/Re
Tuesday, July 3, 2012 at 3:23pm

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
energy at top=energy of spring mgh=1/2 k x^2 solve for x
Sunday, July 1, 2012 at 8:45pm

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
Since the platform is 3m above ground(vertical height), the gravitational PE gained would be m*g*h - no need to multiply by Sin 30
Sunday, July 1, 2012 at 5:51am

Engineering Physics
(1/2) k x^2 = m g h (1/2)(100) x^2 = (0.5)(9.81)(3)(sin 30)
Sunday, July 1, 2012 at 4:22am

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
Use the fact that the total forward momentum is conserved. 0.028* 300 = 14.028* V Solve for final velocity, V.
Thursday, June 28, 2012 at 3:09am

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
1) In 1986, Eric Drexler published “Engines of Creation”, a scientific dissertation in which not only the theoretical bases of nanotechnology are discussed, but also speculation about the possible consequences of the arrival of a nanotechnology enhanced about the ...
Monday, June 11, 2012 at 10:13pm

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
depth= vi*t-4.9t^2 where vi=-20, d=-20 solve for t.
Sunday, May 27, 2012 at 4:59pm

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
It looks as if you needed to do lots of studying, instead of lots of guessing. Make sure you STUDY in the future, okay? These are excellent places to look up the meanings of confusing terminology. Use them a lot!! http://www.answers.com http://en.wikipedia.org http://www....
Sunday, April 29, 2012 at 2:44pm

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
If fŒ(x) > 0 at each point in an interval I, then the function is said to be increasing on I. fŒ(x) < 0 at each point in an interval I, then the function is said to be decreasing on I. In your case : fŒ(x) = 39 /( x + 6 ) ^ 2 39 positive...
Saturday, April 28, 2012 at 9:47pm

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

Algebra
I doubt if you really want to marry a retired engineering professor who graduated from high school in 1955.
Saturday, April 28, 2012 at 3:42pm

to Damon
LOL - I am a retired engineering professor who usually answers math and physics questions. Please be careful online. I could have pretended to be a student.
Wednesday, April 25, 2012 at 4:35pm

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
1/do+1/di=1/f is the equation, solve for di. then, having di (remember the sign conventions for convex mirrors), M=-di/do=hi/ho
Monday, April 16, 2012 at 5:01am

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
Hys. = (Vomax/(R1+R2))R1. Hys. = (10/(47k+68k))47k = 4.09 Volts.
Wednesday, April 11, 2012 at 12:30pm

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 mechanics
11.97m/s
Monday, April 9, 2012 at 9:35am

Engineering
Io = 5000uA/V * 0.1V = 500 uA=0.50 mA. Vo = Io*R = 0.50mA * 10k = 5 Volts.
Friday, April 6, 2012 at 11:31pm

Engineering Economics
sold its prescription drug business to Warner-Chilcott, Ltd. for $3.1 billion. If income from product sales is $2 billion per year and net profit is 20% of sales, what rate of return will the company make over a 10-year planning horizon?
Friday, April 6, 2012 at 12:16pm

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)
1. calculate the Present worth of those monthly payments of 6K for 25 years. That will be the nest egg you need at age 60. 2. calculate the future value of the monthly payments beginning at age 23 and ending at age 60 (37 years?). Now your question. If you have a nest egg at ...
Wednesday, April 4, 2012 at 11:16am

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
Engineers analyze things with models, either physical models, or math models. It saves a lot of time and money to do this.
Tuesday, April 3, 2012 at 9:02pm

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

Engineering economy
4190.35
Tuesday, March 27, 2012 at 4:04pm

engineering
1. If a faucet is dripping at a rate of one drop per second, and each drop contains 0.05 ml (milliliters), calculate how much water (in liters) will be lost in one year. (write your calculation out, a single number answer is not acceptable)
Thursday, March 22, 2012 at 8:44pm

English
Are you going in to work or staying home today? Is she working on that project now? I'll get off work around 5, so I'll meet you at the diner about 5:30. I woke up early, thinking about that budget, so I just got up and started working on it. He is studying engineering...
Thursday, March 22, 2012 at 5:51pm

English
1. At first, Clare didn't say ... 2. ... enroll in the School of Engineering. ... to make a career of playing guitar professionally. 3. If I win ... 4. ... luxurious ... 5. The first two sentences mean the same thing, yes. I feel relieved ...
Thursday, March 22, 2012 at 2:15pm

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

Engineering
gang rape
Tuesday, March 20, 2012 at 11:07am

Engineering
anal beads
Tuesday, March 20, 2012 at 11:06am

Engineering
buttplug
Tuesday, March 20, 2012 at 11:03am

Engineering
meats
Tuesday, March 20, 2012 at 11:02am

Engineering
meats
Tuesday, March 20, 2012 at 11:02am

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)
Thanx Henry I really appreciate ur effort soo much.. May God Bless U..
Thursday, March 15, 2012 at 6:03pm

Engineering Science (Physics)
A. R = Ro + a(T-To)Ro. 3.146 + a(100-40)3.146 = 3.767. 3.146 + 188.8a = 3.767. 188.8a = 3.767 - 3.146 = 0.621. a = 0.621 / 188.8 = 0.003289. = Temp, coerfficient. B. R = 3.146 + 0.003289(0-40)3.146. R = 3.146 - 0.4139=2.732 Ohms @ o Deg.
Thursday, March 15, 2012 at 5:03pm

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

Environmental engineering
Q=PI()*K(H2^2-H1^2)/(ln(R2/R1)) 27.7
Monday, March 5, 2012 at 7:19pm

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