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scZoUnD [109]
3 years ago
8

The error in the trapezoidal rule is proportional to h^2 True b. False

Engineering
1 answer:
Lynna [10]3 years ago
4 0

Answer:

b) False

Explanation:

in trapezoidal rule the error is proportional to h^3 and the order of accuracy is proportional to h^3 .

Trapezoidal rule is numerical integration method .Trapezoidal rule is used to find the area of curves.In trapezoidal rule we finds the approximate value of integration.But the real value of integration will not differ to much from the value which finds by using trapezoidal rule.

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A team of engineers is tasked with designing a hydraulic engine for a motorboat that is as efficient as possible. Identify three
Rina8888 [55]

Answer:

  • Driving surface area as subject to differential pressures
  • How to achieve continuous rotation
  • Mechanical connections

Explanation:

The general stages of thinking when designing a system are;

  • First understanding the problem that requires you to design a solution
  • Defining the problem that needs to be solved. In this case is to design an efficient hydraulic engine for a motorboat
  • Research to find any available solutions for similar problems
  • Idea of the solution
  • A prototype to try solve the challenge
  • Selecting and adjusting the prototype as you implement the solution.

For a hydraulic engine design, the following designing parts are vital;

  • Driving surface area as subject to differential pressures
  • How to achieve continuous rotation
  • Mechanical connection

Pressures are important due to motor displacements. Fuel burns in the cylinder to cause power through fuel gases burning and expansion which is the four-stroke cycle. Continuous rotation will come in the design considerations through reciprocating motions of pistons into rotary motions. Mechanical connections are vital especially in crank shaft turns, gear box that turns horizontal motions to spinning motions and finally the propeller that drives the boat on the water.

7 0
3 years ago
4. Calculate the square root of potato using the sqrt() function. Print out the value of potato again to verify that the value o
N76 [4]

Answer:

potato<-100

print(potato)

sqrt(potato)

potato<-potato*2

print(potato)

Explanation:

The complete question is as follows

Create a variable called potato whose value corresponds to the number of potatoes you’ve eaten in the last week. Or something equally ridiculous. Print out the value of potato.

Calculate the square root of potato using the sqrt() function. Print out the value of potato again to verify that the value of potato hasn’t changed.

Reassign the value of potato to potato * 2.

Print out the new value of potato to verify that it has changed

The question was answered using R programming language.

At line 1, I assumed that I ate 100 potatoes in the previous week.

So, potato = 100

At line 2, the value of potato is printed as 100.

At line 3, the square root of potato is calculated using sqrt function: Square for of 100 = 10

At line 4,the initial value of potato is doubled and stored in potato variable. 100 * 2 = 200

At line 5, the new value of potato is printed: 200.

8 0
4 years ago
What do means by tenes​
Nikitich [7]
In Greek mythology, Tenes was the eponymous hero of the island of Tenedos. He was the son either of Apollo or of King Cycnus of Colonae by Proclia, daughter or granddaughter of Laomedon. ... The natives of the island pronounced Tenes their king.
8 0
4 years ago
A flux used for welding, brazing, or soldering prevents the formation of, dissolves, or helps remove?
OverLord2011 [107]

Answer:

Helps to remove Oxides formed during brazing.

Explanation:

Flux is needed to dissolve and remove oxides that may form during brazing. Prevent or inhibit the formation of oxide during the brazing process

8 0
2 years ago
In the first-order process,a blue dye reacts to form a purple dye. The amount of blue dye at the end of 1 hr is 480 g and the en
Tasya [4]

Answer:

The answer is 960 kg

Explanation:

Solution

Given that:

Assume the initial dye concentration as A₀

We write the expression for the dye concentration for one hour as follows:

ln (C₁) = ln (A₀) -kt

Here

C₁ = is the concentration at 1 hour

t =time

Now

Substitute 480 g for C₁ and 1 hour for t

ln (480) = ln (A₀) -k(1) ------- (1)

6.173786 =  ln (A₀) -k

Now

We write the expression for the dye concentration for three hours as follows:

ln (C₃) = ln (A₀) -k

Here

C₃ = is the concentration at 3 hour

t =time

Thus

Substitute 480 g for C₃ and 3 hour for t

ln (120) = ln (A₀) -k(3) ------- (2)

4.787492 = ln (A₀) -3k

Solve for the equation 1 and 2

k =0.693

Now

Calculate the amount of blue present initially using the expression:

Substitute 0.693 for k in equation (2)

4.787492 = ln (A₀) -3 (0.693)

ln (A₀) =6.866492

A₀ =e^6.866492

= 960 kg

Therefore, the amount of the blue dye present from the beginning is  960 kg

6 0
4 years ago
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