# Homework Help: Science: Engineering

## Recent Homework Questions About Engineering

**engineering mechanics**

a pabble is dropped from the top of the building on a glass at the ground, the sound of splash is heard after 5 second. if the velocity of sound is 330 m/ sec. find the height of the top of the building

**Engineering Science N4**

The diameter of the ram cylinder of a hydraulic press is 200mm. The stroke length of the plunger is 50mm. the effort on the plunger is 5% of the load. Calculate, i) the volume of the liquid needed per stroke if the load has to be lifted 60mm in 30 strokes, if the slip is ...

**eec115 electrical and electronic engineering science**

two capacitor having capacitance of 10uf and 5uf are connected in series and this combination is connected in parallel with a 20v supplies this parallel combination calculate the charge on each capacitor .the voltage across the 10uc capacitor.

**Environmental Science**

How is genetic engineering similar to traditional plant breeding? A) Both processes are used to produce desirable traits in crop plants. B) Both processes involve only allowing certain individuals to breed in a population to enhance passing of certain traits to future ...

**Environmental Science**

Which term is used to describe when genes are transferred from one species of crop plant to another to produce desirable traits such as pest resistance? A) Selective breeding B) Genetic engineering I think the answer is A

**Art**

Which of the following shared trait of artists and inventors allows an artist to render accurate images on canvas and an inventor to create a detailed model of a product A. knowledge of mathematics B. hand-eye coordination C. photographic memory******** D. knowledge of ...

**calculus**

In electrical engineering, a continuous function like f(t)=sin(t), where t is in seconds, is referred to as an analog signal. To digitize the signal, we sample f(t) every ∆t seconds to form the sequence Sn= f(n∆t). For example, sampling f every 1/10 second produces the ...

**Software Engineering**

Create an automatic question paper generator system in JAVA which involves Artificial Intelligence with the following requirements: The system should generate a test paper automatically based on the difficulty level. For this create a fake data for 25 questions and collect...

**Engineering Mechanics of Composite Materials**

A long and thin circuit interconnect of thickness t=0.5mm is to be made from a unidirectional glass/epoxy composite material (E1=60 GPa, E2=10 GPa, V12=0.3 and G12=10 GPa). If the interconnect is subjected to a biaxial normal stress (in the fiber direction and its ...

**engineering mathematics**

A car is travelling along the road at 8m/s. It accelerates at 1m/s/s for a distance of 18meters. How fast is it then travelling

**engineering mathematics**

Write down 4 equations of horizontal linear motion and quantify them

**engineering mathematics**

A car of mass 500kg is travelling along a flat road. its engine provides a forward force of 300N. Air resistance is 200N. What will its acceleration be?

**engineering mathematics**

A cyclist of mass 60kg rides a bicycle of mass 20kg. When starting off, the cyclist provides a force of 200N. What is his acceleration?

**Engineering Science N4**

A box of books has a mass of 46kg and is being towed by a rope which is oriented at 15 degree to the horizontal at a point where it is tied into a knot. If the pulling force is increased until the box begins to slide, determine the box's initial acceleration if the coefficient...

**Engineering**

When we drive our car at 110 feet per second, we measure an aerodynamic force (called drag) of 61 pounds-force that opposes the motion of the car. How much horsepower is required to overcome this drag?

**EDTECH**

1. Which of the following could be an engineering project that could better protect the planet? -finding a new landfill site -designing a better trash compacter -deciding which product can be recycled*** -growing microbes that eat oil 2. Engineers who are working to find ...

**Structures/Engineering**

Design for flexure a simple beam 14 ft in length and having a total uniformly distributed dead load of 13.2 kips and a total uniformly distributed live load of 26.4 kips.

**Engineering Physics Opt B**

9. The flywheel shown in Figure 14.8 may be considered to be a steel cylinder (density 7800 kg m−3) of outer radius 40 cm and depth 12 cm, but with the central section (of outer radius 18 cm) missing. a. Use this simplification to estimate its moment of inertia. Ignore the ...

**Science**

1. One potential problem with genetic engineering? 2. I can genetic engineering never solve all of mans problems? 3. What are two biblical principles that must be considered when making decisions about human genetic engineering? Very much appreciated!

**Engineering**

If (y-2)hole power 3 = (y+2)hole power 3 then find the value of Y. a) -16 b) -4 c) O d) 4

**engineering**

b) The crank OA of a mechanism, as shown in the figure, rotates clockwise at 120 r.p.m. The lengths of various links are OA = 100 mm ; AB = 500 m ; AC = 100 mm and CD = 750 mm. Find by instantaneous centre method: 1. Velocity of point C. 2. Velocity of slider D. 3. Angular ...

**Engineering science**

A man throw a ball upward with velocity of 30m/s.1.5 seconds he throw anothe wih the same velocity. Identify at what high will te ball pass one another?

**Engineering Mathematics-I**

Find the area bounded by y=2x^2 and y^2=4x

**Plz check**

1. Blood type in humans is controlled by ____ alleles with an additional Rh factor that determines _________ . one; color two; positive or negative charge three; shape of blood cells four; phenotype 2. If two people are heterozygous for cystic fibrosis, what are the chances ...

**Engineering science**

A steel cylinder contains an ideal gas at 27°C. The gauge pressure is 140kPa. If the temperature of the container increases to 79°C, what is the new gauge pressure?

**Software Engineering**

When did you start "speech and Auditory interfaces" who made it? What are the programming languages that was used in its design? How are designed? Her examples?

**Software Engineering**

When did you start "speech and Auditory interfaces" who made it? What are the programming languages that was used in its design? How are designed? Her examples?

**Civil engineering**

Prove varignons theorem , with ex pls

**science**

Discuss current or future applications of nanotechnology in fields such as medicine, engineering, space exploration, fuel cell development, air and water purification, and agriculture.

**Engineering**

4. A rectangular enclosure is formed by using 800m of fencing. Find the greatest possible area that can be enclosed in this way and the corresponding dimensions of the rectangle.

**Science**

1. What type of reproduction results in offspring being identical to the parent? A)sexual reproduction B)genetic engineering C) unicellular D)asexual reproduction 2. Which of the following is an example of sexual reproduction? A)a lizard growing a new tail B)a chicken laying ...

**engineering**

During drilling of a deep oil well, the drill pipe got rigidly stuck. It was necessary to determine the depth at which the jamming occurred. The engineer ordered the pipe subjected to a large upwards tensile force, i.e., she pulled on it. As a result, the top of the pipe came ...

**English**

Can I use "one" for past tense in writing a technical paper such as engineering lab. Ex. So one can see the rocks form.

**Engineering**

If the cost of a .75 x 6.o x 19.0 sheet of ABS plastic is $18.00, what is the cost to make 20 parts? each part has a mass of .437lb.

**Engineering**

If the cost of a .75 x 6.0 x 19.0 sheet of ABS plastic is $18.00, what is the cost to make 20 parts?

**Engineering/Physics**

When gasoline is burned in the cylinder of an engine, it creates a high pressure that pushes on the piston. If the pressure is 150 pound-force per square inch, and it moves the 3-inch diameter piston a distance of 6 centimeters in 0.1 seconds...

**Engineering Linear Equation**

At your initial meeting with your business partners for CellGenTech, you propose that the rate of change in the number of newly introduced cell lines that the company scientists should be able to produce should be proportional to the number of cell lines. The company initially...

**spanish**

Many job options for high school graduates in Honduras are in what field? A. agriculture B. english C. engineering* D. technology

**Engineering Math**

Assume that the number of ﬁsh P(t) after t years grows according to the logistic equation dP/dt= P(a-bP) = bP(300 − P) Find the solution of this DE (with the given initial value at t = 0) as a separable equation. Your solution formula will contain b as an unknown ...

**Engineering Math Growth**

I am having trouble figuring out where to start with this one. Biologists stocked a lake with 40 ﬁsh and estimated the carrying capacity (the maximal population for the ﬁsh of that species in that lake) to be 300. (a) Assume that the number of ﬁsh P(t) ...

**Engineering Math**

I don't know where to start on this one. A thermometer is taken from an inside room to the outside, where the air temperature is ten degrees Fahrenheit. After one minute the thermometer reads 40 degrees Fahrenheit, and after two minutes it reads twenty-five degrees Fahrenheit...

**Engineering Math, Newtons Cooling Method**

Newton's equation for a free falling object with air resistance of mass m kilograms says that its velocity v(t) satisfies the DE mv'(t) = mg - kv(t) where g = 9.8 \frac{m}{s^2} and v(t) is measured in \frac{m}{s}. Suppose that k=2 \frac{kg}{sec} and that a ball of mass m = 1 ...

**Engineering Math**

An unknown radioactive element decays into non-radioactive substances. In 120 days the radioactivity of a sample decreases by 59 percent. What is the half life of the element? How long will it take for a sample of 100 mg to decay to 77 mg? The answer is not 93 day, I ...

**Engineering/Physics**

The space shuttle fleet was designed with two booster stages. If the first stage provides a thrust of 5.25 Mega-newtons and the space shuttle has a mass of 4,530,000 pound-mass, what is the acceleration of the spacecraft in miles per hour squared?

**biology**

Both of the following processes represent what? A. A baker using yeast to make dough rise. B. Inserting human insulin genes into bacteria to make insulin for diabetics. biotechnology transgenic organisms genetic engineering all of the above

**engineering**

A cast-iron saucepan of mass 1.4kg is filled with 5L of water at 15°C, placed on an electric hotplate, and bought up to boiling point. What is the cost of the energy used if the electricity costs 10 cents per kWh and the hotplate has an efficiency of 70%.

**Engineering science**

A motorcycle accelerates from rest 5m/s until it reaches 72km/h.calculate the distance travelled by the motorcycle?

**fire engineering science 300**

Calculate the volume of one mole of gas at STP(Standard Temperature & Pressure). Given: P=101 325 Pa n=1mol R=8,31 J K-1 mol-1 T=273K Given: P1=785mm Hg P2=760mm Hg T1=293 K T2=273 K V1=60cm3

**fire engineering science 300**

A mass of a gas has a volume of 60cm3 at a temperature of 20°C and a pressure of 785mm mercury. Calculate the volume of a gas at STP(Standard Temperature & Pressure). Given: P1=785mm Hg.

**biology**

which of the following is consistent with the theory of vitalism ? A.all matter contains a vital force** b.the chemistry of life and nonlife are similar c. living things contain a vital force absent in nonliving things d. life must be sustsained through a series of chemical ...

**biochemistry**

which of the following is consistent with the theory of vitalism ? A.all matter contains a vital force** b.the chemistry of life and nonlife are similar c. living things contain a vital force absent in nonliving things d. life must be sustsained through a series of chemical ...

**engineering mechanics (dynamics)**

A 500 N weight is attached to a stiff rod of negligible weight that is hinged to one end. The rod is released from rest in horizontal position and allowed to swing freely in vertical arc. Through what angle with the horizontal must it swing to cause a tension in it of 1000N?

**engineering mechanics**

a 75kg person is standing on a board inclined at 30 angle type the horizontal .what are the magnitudes of gravitational components normal to the board and parallel to the board

**engineering dynamics**

Arocket is fired vertically up ward from alaunching pad b.it is flight is tracked by radar frompoint A, determine the velocity of the rocket in terms of distance ,teta, tetadot

**engineering science**

a lifting machine is used to lift a load up to a height of 800mm when an effort moves through a distance of 4 m

**engineering science**

A horizontal force of 230B is required to pull a trolley 39 m, at a constant speed across a horizontal surface in 40 sec.1 the work done 2. The speed of the trolley. 3. Power required

**engineering science**

An aeroplane can fly at 250 km/h in still air.How long will it take it to reach a plane 500 km to south-east if a wind is blowing at 80 km/h from west?

**Engineering science**

A ball is thrown upwards and reaches the ground once again after 7sec how can I calc the total distance covered by the ball.

**Reaction Engineering**

The irreversible elementary reaction 2A ---+ B takes place in the gas phase in an isothermal tubular (plug-Jlow) reactor. Reactant A and a diluent C are fed in equimolar ratio, and conversion of A is 80%. If the molar feed rate of A is cut in half, what is the conversion of A ...

**Engineering science n3**

a train with a mass of 120Mg accelerates uniformly on a horizontal track. The resistance to movement is 5N per kN mass of the train. The force in the draw bar is 30kN. Calculate: a) The force required for a constant speed b) The force that cause acceleration c)The acceleration

**ELA**

What are few questions and stuff that people or anyone would want to know about electrical engineering.... I need help writing 3 paragraphs based on that.

**accounting principles**

Success Systems had the following transactions and events in December 2015: Dec. 2 Paid $1,200 cash to Hilldale Mall for Success Systems’ share of mall advertising costs. 3 Paid $500 cash for minor repairs to the company’s computer. 4 Received $7,000 cash from Alex’s ...

**Engineering**

What are few things that people want to know about electrical engineering??

**Journalism**

List the things that people actually want to know about electrical engineering

**ss**

1. The Himalayas separate _________. (1 point) Pakistan and India the Indian subcontinent from the rest of Asia Afghanistan from the rest of South Asia northern and southern India 2. What impact do monsoon winds most have on South Asia? (1 point) Monsoon winds carry plenty of ...

**Maths lit, life science, economics, geography**

hey, I want to do medicine and civil engineering is this subjects are right? If not please tell me which career i can go to with this subjects after my matric? Thanks

**social studies**

1. The Himalayas separate _________. (1 point) Pakistan and India the Indian subcontinent from the rest of Asia Afghanistan from the rest of South Asia northern and southern India 2. What impact do monsoon winds most have on South Asia? (1 point) Monsoon winds carry plenty of ...

**engineering**

important of ict in electrical studies

**algebra**

Please help!!! Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle the math behind some simple curves in the ...

**Algebra Help me Please**

Someone please help me with this!!! Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle the math behind some ...

**Science**

1. Which of the following could be an engineering project that could better protect the planet? -finding a new landfill site -designing a better trash compacter -deciding which product can be recycled*** -growing microbes that eat oil 2. Engineers who are working to find ...

**physics**

An elevator cable can withstand a maximum tension of 1.83×104 N before breaking. The elevator has a mass of 420 kg and a maximum acceleration of 2.27 m/s2 . Engineering safety standards require that the cable tension never exceed two-thirds of the breaking tension

**Software Engineering**

Consider the following program (written in pseudo-code) begin x:= 0; y:= 1; z:= 1; while y <= n do x:= x+1; z:= z+2; y:= y+z; od sqrt := x; end Prove the partial correctness of the program with respect to the following predicates: Pre: {n>=0} Post: {sqrt2 <= n and n &...

**engineering mathematics**

use modified newton's raphson method to indicate the solution correct to 6 decimal places near to x=2 of the equation x^3-6x^2+13x-9=0

**Maths Lit, Geography, English, LO, EGD, Afr.**

I am very good at Geo and EGD. Because I didn't take Physical Science, I cannot get into varsity for any engineering degree courses. Can you make alternative career choices available that might include these two subjects?

**engineering economics**

A) A company has issued 10-year bonds, with a face value of $1,000,000 in $1000 units. Interest at 8% is paid quarterly. If an investor desires to earn 12% nominal interest (compounded quarterly) on $10000 worth of these bonds, what would the purchase price have to be? (5.3) B...

**transportation engineering**

on the same Lane of a road a car A is following car B at a center distance of 25 m. both cars are traveling at a speed of 100 kmph when car A attempts to overtake car B at a uniform acceleration of 0.8 m/s^2.after traveling for 5 sec at that acceleration rate to overtake car B...

**chemical engineering technology**

a gas cylinder contains N2 at 200 Kpa and 80°C as result of cooling the pressure drop to 190 Kpa and 30°C. how much work was done on the gas? can i please a solution for that equation.

**Engineering science**

2. A wooden block slides directly down an inclined plane, at a constant velocity of 6 m/s. a. How large is the coefficient of kinetic friction if the plane makes an angle of 25 degrees with the horizontal? b. If the angle of incline is changed to 10º, how long far will the ...

**Engineering Accounting**

A car may be purchased with a $3500 down payment now and 72 monthly payments of $480. If interest rate is 12% compounded monthly, what is the price of the car?

**engineering**

If you were creating a bike exercise machine, how would you electronically track the movement of the legs while pedaling?

**electrical electronics engineering**

I was give an assignment to be submitted on 9th of march please help out topic write a term paper on "MySQL database engines: an overview of MyISAM and InnoDB". Pls help out

**engineering**

an overview of MyISAM and InnoDB

**World History**

Name the engineering marvel which connects the Atlantic Ocean with the Pacific Ocean. Panama Canal?

**Urgent! PLZZ HHEELLPP!!**

8. Which answer best describes a main benefit of the Transcontinental Railroad? A.) It proved to the world that the United States was capable of great feats of engineering B.) It created safe, high-paying jobs for immigrants who wanted to work building the railroad C.) It ...

**Grade 8 Art**

Designing a World: Engineering Movies The cinematographer works with what other professional to plan how each scene will be filmed and lit? A.Production designer B. Director*** c.Graphic Artist D. Screenwriter 2.Movie professionals such as props designers and graphic designers...

**History**

Which answer best describes a main benefit of the Transcontinental Railroad? A.)It proved to the world that the United States was capable of great feats of engineering. B.)It created safe, high-paying jobs for immigrants who wanted to work building the railroad. C.)It created ...

**engineering science**

A solid cylinder rolls from rest down an incline 6m high without slipping. calculate the linear velocity at the foot of the plane

**History**

In 1846, the population of San Francisco, California, was only 200. By 1852, the city's population was 36,000. 1. Which contributed the most to San Francisco's population change? (5 points) The Gold Rush The Mexican-American War The Monroe Doctrine The Trail of Tears 2. Public...

**Engineering**

A perfect coin should produce heads and tails with equal probability. If we assign the number 0 toheads and the number 1 to tails, then we can mimic such a perfect coin in Matlab. Specifically, we cangenerate N “coin flips” in Matlab by doing x= (rand(N, 1) < 0.5 );, ...

**Physics/Eletrical engineering**

Which of the following is a conducting loop in which electrons carrying electric energy may be transferred from a suitable source to do a useful work and returned to the source? a.) Direct current b.) Indirect current c.) Electric circuit d.) source of energy

**Enriched science**

Which of the following would be an engineering project that could help protect the planet? A. Finding a new landfill site B. Designing a better trash compactor C. Deciding which products can be recycled D. Growing microbes that eat oil

**environmental engineering**

A lake receives 8 m3/s of inflow containing 0.3 mol/m3 of a chemical. The chemical reacts with a first order rate constant of 0.01 h-1. The outflow from the lake is also 8 m3/s. Assume there was no chemical in the lake at the beginning and volume of the lake is 106 m3. What ...

**environmental engineering**

Pesticide is applied to a 10 ha (hectare) field at an average rate of 1 kg/ha every month. The soil is regarded as 20 cm deep and well-mixed. The pesticide evaporates at a rate of 2% of the amount present per day and it degrades microbially with a rate constant of 0.05 day-1. ...

**Engineering**

The density of gasoline is 0.72 grams per cubic centimeter. What is the mass in units of kilograms of a 5-gallon container filled completely with gasoline? Ignore the mass of the container.

**engineering**

In many engineering uses, the value of �g�, the acceleration due to gravity, is taken as a constant. However, g is actually dependent upon the distance from the center of the Earth. A more accurate expression for g is: g=g0(Re/Re+A)^2 Here, g0 is the ...

**Electronics Engineering Technology**

5) A microwave transmitter typically requires a +8dBm audio level to drive the input fully. If a +10dBm level is measured, what is the actual voltage level measured? Assume a 600Ω system.

**engineering science**

calculate the work done required to push a car for 420 meters up an melon the force required to push the car is equal to 615n

**social studies**

The mestizo resulted from? Aztec engineering. The blending of Aztec and Spanish people. The adoption of Aztec language by the Spanish. The building of floating gardens. (MY ANSWER)

**Health and science**

Explains the science, technology, engineering and/or mathematics behind a solar cooker that work day and night and how could a solar cooker that works day ajd night both address the everyday problems and have a broader impact locally or globally.