# Homework Help: Science: Engineering

## Recent Homework Questions About Engineering

**school of engineering**

a motor of mass 1500 kg accelerates from 50 km/h to 100 km/h in 10 seconds.calculate. (i)The acceleration in metre/second2. (ii)The distance travelled. (iii)The force on the vehicle.

*Tuesday, October 15, 2013 by abdul*

**chemistry**

The use of the British thermal unit (Btu {\rm Btu}) is common in much engineering work. (1 Btu {\rm Btu} = 1054J {\rm J}) A Btu {\rm Btu} is the amount of heat required to raise the temperature of 1 lb {\rm lb} of water by 1 ∘ F ^\circ {\rm F}. How many quads of energy ...

*Monday, October 7, 2013 by Anonymous*

**engineering (logic systems design)**

Two flip-flops are connected as shown below. The delay represents wiring delay between the two clock inputs, which results in clock skew. This can cause possible loss of synchronization. The flip-flop propagation delay from clock to Q is 10 ns < tp < 15 ns, the set-up ...

*Thursday, October 3, 2013 by Mohamed*

**Engineering**

What is the critical buckling force that will buckle a 9 foot tall 2 x 4 (K = 1.0)? Please show how to set up the problem and the steps to solve. I do not understand. Thank you.

*Sunday, September 29, 2013 by Nabil*

**chemisry**

What are the specializations of sanitary engineering? Drinking water supply Sewage Wastewater treatment 2) Name the different parts of the drinking water supply system? Production Storage Distribution 3) Which of the following three systems can be discerned when producing ...

*Tuesday, September 24, 2013 by Anonymous*

**Engineering**

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

*Saturday, September 14, 2013 by Nabil*

**ENGINEERING ECONOMY**

A man bought a house and a lot worth P300000. The annual amortization of the house and lot is P34200. Determine rate of interest he was changed?

*Monday, September 9, 2013 by pls help*

**Environmental Engineering**

The two ponds in the figure below can be modeled as completely-stirred tank reactors (CSTRs) in series. The first-order decay rates for each pond are different but the inflow and outflow rates and volumes for the two ponds are the same. a. Write a mass-balance (differential) ...

*Monday, August 26, 2013 by Christine*

**engineering**

A thermometer is used to measure the temperature of a gas flow through a pipe. The gas temperature is read at 500°C and the duct temperature is measured to be 350°C. The thermometer is cylindrical with a diameter of 1 mm and an intrusion length of 1 cm. It can be assumed ...

*Wednesday, August 14, 2013 by jim*

**Vocabulary**

choose the term that matches the definition. building and construction. a.architecture b. engineering c.nursing d.statistics b

*Saturday, July 20, 2013 by LadyT*

**Vocabulary**

Building and construction A. Architecture B. Engineering C. Nursing D. Statistics im pretty sure its A

*Wednesday, July 17, 2013 by TammieChristina*

**Environmental Control Engineering**

A development in a town was designed to accomodate 10,000 people, in 2,000, 5 units building, each person in this settlement uses an average of 5 gallons of water per day for washing purposes. As an engineering technician you are required to design a waste water treatment ...

*Monday, July 8, 2013 by Anonymous*

**element of chemical engineering**

the specific internal energy of a fluid is 200 cal/g .if the fluid leaves a system at a flow rate of 5 g/min ,at what rate does it transport internal energy out of the system?

*Wednesday, July 3, 2013 by mousumi*

**Mechanial engineering**

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

*Sunday, June 30, 2013 by Colour*

**ECONOMICS/ACCOUNTING/BUSINESS**

PLS HELP, BEEN STUCK FOREVER ON TWO QUESTIONS, THIS IS ONE : There are usually no costs for the first 3 years, but thereafter maintenance is re- quired for restriping, weed control, light replacement, shoulder repairs, etc. For one section of a particular highway, these costs ...

*Monday, June 24, 2013 by Aly*

**Engineering science**

A lorry has a mass of 5640kg and accelerates uniformly from rest to reach a velocity of 100km/h in 10s. Determine the acceleration of the lorry. Determine the force needed to accelerate the lorry

*Friday, June 21, 2013 by Jordan*

**Mechanical Engineering**

a tennis ball was held 4.5 ft above the surface of a tennis court and was thrown vertically downward with an initial velocity whose magnitude was 12 fps. determine the magnitude of the velocity of the ball just before it struck the surface of the court

*Friday, June 21, 2013 by Jen*

**Engineering**

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

*Friday, June 7, 2013 by Ahmed*

**engineering**

Let’s suppose the message x(t) is an analog signal shown in the figure below. a) Draw the block diagrams of the system which converts the analog message signal x(t) to a pulse modulated signal. b) Draw the sampled signal with the sampling frequency fs=2khz c) Carry out the ...

*Thursday, June 6, 2013 by dioptas*

**Engineering**

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

*Wednesday, June 5, 2013 by Sat*

**Engineering science**

A vehicle with a mass of 1200 kg accelerates uniformly from rest upwards with an incline of 1:25 and reaches a speed of 72 km/h after 2 minutes,calculate: 1.The kineyic energy of the vehicle after 2 minutes 2.The potential energy of the vehicle after 2 minutes

*Sunday, May 26, 2013 by Ayanda*

**Engineering**

The bar in the figure has constant cross sectional area A. The top third of the bar, of length L, is made of a material with mass density ρ and Young's modulus E. The bottom two thirds of the bar (length 2L) is made of a different material, with density ρ/2 and Young...

*Thursday, May 23, 2013 by MAN*

**Engineering Physics**

An ideal gas at 12.1 °C and a pressure of 2.38 x 105 Pa occupies a volume of 2.88 m3. (a) How many moles of gas are present? (b) If the volume is raised to 4.70 m3 and the temperature raised to 28.3 °C, what will be the pressure of the gas?

*Wednesday, May 22, 2013 by kurt*

**Mechanical Engineering**

A load W=2 kN is applied vertically to joint C of truss ABCDE as indicated. You will use the method of joints to obtain the axial forces in the bars and reactions at the supports A, E . We start with the classification of the degrees of freedom as "free" or "constrained". From...

*Sunday, May 19, 2013 by AMK*

**physics**

Name of physics book for 11 and 12.to catch engineering exam and other competetive exam

*Monday, May 13, 2013 by john*

**Chemical engineeing**

Can someone help me with online exam ( fundamental of chemical engineering class ) ? Please eamil me ( davd_jo(at)(ya h o o )dot (com ) I'll offer money

*Monday, May 6, 2013 by Dave*

**Engineering**

A physics major is working to pay his college tuition by performing in a traveling carnival. He rides a motorcycle inside a hollow transparent plastic sphere. After gaining sufficient speed, he travels in a vertical circle with a radius of 13.4 . The physics major has a mass ...

*Sunday, April 28, 2013 by Lama*

**MECHANICAL ENGINEERING**

Need help with some engineering math problems? 1. You wish to determine the total system efficiency of your hydraulic press that is powered by an electric motor. The characteristics of the hydraulic press are as follows: •Electric motor utilizes 5 amps under load & 220volts...

*Thursday, April 18, 2013 by Anonymous*

**Engineering**

The power plant is to be operated in a region where the same company operates several other coal fired power plants that were all built in the 1960s. The new power plant is planned to have 500 MW energy generating capacity. The next largest plant is 50 MW and each is emitting ...

*Tuesday, April 9, 2013 by please help!!*

**Engineering**

The power plant is to be operated in a region where the same company operates several other coal fired power plants that were all built in the 1960s. The new power plant is planned to have 500 MW energy generating capacity. The next largest plant is 50 MW and each is emitting ...

*Tuesday, April 9, 2013 by please help!!*

**Air pollution Engineering**

The power plant is to be operated in a region where the same company operates several other coal fired power plants that were all built in the 1960s. The new power plant is planned to have 500 MW energy generating capacity. The next largest plant is 50 MW and each is emitting ...

*Tuesday, April 9, 2013 by hariram1111*

**stat probability**

At a certain college, there were 780 science majors, 320 engineering majors, and 390 business majors. If one student was selected at random, the probability that they are a business major is?

*Monday, April 8, 2013 by Lynn*

**engineering**

Mary Williams needs to change a Fahrenheit temperature to Celsius. Use the Fahrenheit temperature of 80 degrees to test your solution.

*Monday, April 8, 2013 by Anonymous*

**math - please help me**

65 chemical engineering students are from urban/suburban backgrounds. (Success is defined as a C or better in the course.) 52 of the 65 students succeeded. Another 55 students were from rural backgrounds; 30 of these students succeeded. A Is there good evidence that the ...

*Monday, April 8, 2013 by Sejul*

**LBCC**

At a certain college, there were 780 science majors, 320 engineering majors, and 390 business majors. If one student was selected at random, the probability that they are a business major is?

*Sunday, April 7, 2013 by Lynn*

**MATH**

An engineering consultant bids on jobs where he can make $10000 profit. If in a certain month, he has a 20% probability of getting a contract, 30% probability of getting 2 contracts, 40% probability of getting 3 contracts, and 10% probability of getting 4 contracts, what is ...

*Wednesday, April 3, 2013 by Oliwia*

**World History**

How were the Byzantine's Engineering geniuses? Take two or three of their engineering feats and discuss how these marvels led to the empire's overall success.

*Wednesday, April 3, 2013 by Gregory*

**MATH**

An engineering consultant bids on jobs where he can make $10000 profit. If in a certain month, he has a 20% probability of getting a contract, 30% probability of getting 2 contracts, 40% probability of getting 3 contracts, and 10% probability of getting 4 contracts, what is ...

*Wednesday, April 3, 2013 by Dominika*

**civil engineering**

A stone (on the edge of the roof) thrown from the top of a building is given an initial velocity of 20.0 m/s straight upward. The building is 50.0 m high, as shown in Fig. 4. Using tA = 0 as the time the stone leaves the thrower’s hand at position ○A . The ...

*Monday, April 1, 2013 by hamze*

**engineering mechanics**

from what height must a heavy elastic body be dropped on a floor so that after rebounding thrice it will reach a height of 16m?take e=0.5

*Sunday, March 31, 2013 by peter*

**engineering mathematics**

if on an average vessel in every 10 wrecked.find the probability that out of 5 vessels expected to arrive at least 4 will arrive safetly?

*Sunday, March 31, 2013 by ambili*

**engineering physical**

An elevator with a man inside, of gross mass 500KG, starts moving upwards with a costant acceleration and acquires a velocity os 2m/s after travelling a distance os 3m.Find the pull in the cables during the accelerated motion. If the elevator, before stopping, moves with a ...

*Tuesday, March 26, 2013 by Sian*

**Ýndustrial Engineering**

The figure shows the paths of a golf ball your friend drops from the window of her apartment and of the rock you throw from the ground at the same instant. The rock and the ball collide at x = 41.00 m, y = 17.02 m, and t = 2.94 s. If the ball was dropped from a height of h = ...

*Monday, March 18, 2013 by Ozgun*

**engineering mechanics**

A vehicle on a monorail has a speed S = 10 m/s and an acceleration S=4m/s 2 relative to the ground reference XYZ when it reaches point A. Inside the vehicle, a 3 kg mass slides along a rod which at the time of interest is parallel to the X axis. This rod rotates about a ...

*Sunday, March 17, 2013 by kuldeep*

**statistics**

The Engineering Department Claims the Average Battery Lifetime is 500 Minutes. You wish to check whether the lifetime is different from 500 Minutes. What type of hypothesis test is it going to be?

*Wednesday, March 13, 2013 by Anonymous*

**Physics-VASTS**

The Mass Budget: Mars Reconnaissance Orbiter Repair Mission Operational Concept Math Problem: The Mars Reconnaissance Orbiter (MRO) has encountered a failure in its High Resolution Imaging Science Experiment (HiRISE) camera. Mission Case: As the HiRISE camera contains the ...

*Thursday, March 7, 2013 by red*

**engineering science N4**

Two ships leave port simultaneously. Ship A sails north-west at 30 km/h and ship B sails S 40 degrees W at 30 km/h. Calculate the velocity of ship B relative to the velocity of ship A.

*Monday, March 4, 2013 by sihle*

**Sound engineering**

A Question of engineering about Sound. How to calculate in step by step? Thank you. The octave bands¡¦ Sound pressure levels in dB re 20 £g Pa are: Hz 57 129 220 420 1K 2K 4K 8K dB 85 95 90 80 88 70 68 72 What is the overall A-weighted sound pressure level?

*Thursday, February 28, 2013 by Kelvin*

**Engineering Economy**

What is the future worth of $1,000 in month 1, $1,040 in month 2, and amounts increasing by $40 per month through month 12, at the end of year 2 if the interest rate is 23.7631528% per year, compounded continuously?

*Tuesday, February 26, 2013 by ANdy*

**Engineering Econonmy**

You decide to open an IRS-approved retirement account at your local brokerage firm. Your best estimate is that it will earn 9 percent. At the end of each year for the next 25 years, you will deposit $4000 per year into the account (25 total deposits). 3 years after the last ...

*Saturday, February 23, 2013 by manny*

**Engineering Maths**

help solving the ffg. differential equation: dy/dx +ytanx=y^3sec^4x

*Friday, February 22, 2013 by Taldil*

**Engineering Maths**

Pleas help solve the ffg. differential equation: dy/dx-(1+1/x)y=y^2

*Friday, February 22, 2013 by Taldil*

**Engineering Maths**

please help solve this differential equation: x^3+(y+1)^2 dy/dx=0

*Friday, February 22, 2013 by Taldil*

**Engineering Econonmy**

For your 21st birthday, your grandfather offers you a gift of $1000 today. However, you have the choice of waiting 3 years and receiving $1500 OR waiting 5 years and receiving $3000. If your money grows at a rate of 8 percent compounded annually, which alternative should you ...

*Thursday, February 21, 2013 by nutz77*

**engineering**

a ship is 100km north west of cape town harbour and it sails directly north at a velocity of 30km/h in ei ght hours.calculate its resultant speed with reference to the cape town harbour in magnitude and direction

*Wednesday, February 20, 2013 by Anonymous*

**engineering**

Anybody knows the quiz3 of coursera "control of mobile robots"?

*Monday, February 11, 2013 by asha*

**world history**

Explain the importance of Roman technology and engineering? Cover two separate kinds of Roman technology and engineering.

*Friday, February 8, 2013 by Evs*

**english (theses writing)**

hello! :) I am a freshman college student and I am looking for a thesis topic about civil engineering.Can you give me a topic on my thesis about civil engineering? thanks :)

*Friday, February 8, 2013 by Anonymous*

**english (theses writing)**

Can you give us a topic on our thesis about civil engineering?

*Friday, February 8, 2013 by Anonymous*

**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 by Taldil*

**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 by Joe*

**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 by Ashley*

**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). The ‘...

*Monday, January 28, 2013 by Abdul*

**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). The ‘...

*Monday, January 28, 2013 by Abdul*

**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 by amanda*

**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 by amanda*

**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 by Delilah*

**7th grade science**

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 by Delilah*

**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 by q*

**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 by Anonymous*

**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 by anne*

**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 by BaileyBubble*

**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 by NONO*

**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 by NONO*

**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 by gabe*

**7th grade science**

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 by Delilah*

**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 by andyy*

**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 by This Girl*

**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 by This Girl*

**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 by This Girl*

**engineering**

Determine the resultant force and its inclination with ox

*Tuesday, November 20, 2012 by Tronick a'gitok*

**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 by Silas*

**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 by george*

**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 by CHAI*

**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 (b...

*Thursday, November 15, 2012 by Susan*

**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 by John*

**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 by geniaj*

**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 by jay*

**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 by Eddie*

**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 by joanne*

**Engineering Problem Solving**

if a car can accelerate at 7 meters/second, what will its 0-60 mph time be?

*Sunday, November 4, 2012 by P.J.*

**personal statement**

this is my personal statement. please 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 by help me*

**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 by anu*

**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 by kyle*

**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 by Steph*

**physics**

plz tell me in which website can I get free engineering notes for first year B.E?

*Tuesday, October 16, 2012 by nanbala*

**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 by josephz*

**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 by Mark*

**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 by Tara*

**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 tall...

*Friday, September 21, 2012 by josephz*