71 Answered Questions for the topic civil engineering

Civil Engineering

09/08/21

#### How much can i store weight wise on my flat office roof?

I have an office inside a warehouse with a flat roof. We would like to store some miscellaneous items on top. We were told we needed a sign that displayed the weight capacity of the roof. How would...
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Civil Engineering Statics

07/26/21

#### How do you know it is a zero-force member?

How do you know a member is zero-force? Assume I have no knowledge of zero-force members when explaining.

Civil Engineering

06/18/21

#### Calculate load for an I beam used as a column

Hello. I am trying to calculate how much load can an I beam bear if used as a column. it is a steel beam W 5x16

06/17/21

#### applied hydraulics

In a 30 mm diameter pipe, 0.1 mm roughness and 200 m long, 1.5 L/s of water flows at 20oC. Calculate the head loss hf and the unit head loss J = hf/L

06/17/21

#### applied hydraulics

In the flow of a fluid there is a galvanized steel duct (e = 0.180 mm; D = 100 mm); Q = 20 L/s; ν = 3604 x 10-4 m2/s; γ = 1,324 kgf/m3. The question is: what is the head loss in fluid m.c. and the...
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05/02/21

#### Show that B is the inverse of A.

A = -1/2 -5/4 B = 8 51 2 -4 -2To show that B is the inverse of A, we need to show that AB = I = BA.AB = -4 + ___ -5/2 + ___ = ____ ____ 8 + ___ 5 + ___ ____ ____BA = -4 +...
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Civil Engineering English

02/09/21

#### Use the function to evaluate the indicated expressions and simplify

F(x)=x+5f(x2)=(f(x))2=

Civil Engineering Linear Algebra

12/25/20

#### linear algebra and civil engineering

I have a term project. I should do research about ''how linear algebra can use in civil engineering'' Can you please suggest me resource about this topic.

10/30/20

#### The volleyball is played with a ball of about 270 g and 21 cm in diameter.

In one game, the ball ended up in a pool with so much strength that it almost reached the bottom of it and then went up to the surface.Calculate:a) The force exerted by the pool water on the...
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10/29/20

#### A 20 cm high polystyrene board with a surface area of 40 dm2 is floating in the water.

a) What fraction of its volume is above the water surface?b) If a 35 kg child is placed on this board, what will be the fraction of its volume that is above the water surface?Data: Polystyrene...
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10/29/20

#### A piece of copper immersed in water has an apparent weight of 2.65 N and when it is immersed in a liquid of density 1.50 x 103 kg/m3 its apparent weight is 2.50 N.

Is it pure copper or does it contain any other metal? Copper density 8.9 X 103 kg/m3.

10/29/20

#### A fluid pressure gauge, called a Venturi tube, or venturer, is a device designed to measure the velocities of fluids flowing through pipes.

It consists of a tube that is inserted in the pipe, has the same diameter as this one, gradually narrowing and then increasing, the section also gradually to avoid the formation of swirls and thus...
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10/29/20

#### The volleyball is played with a ball of about 270 g and 21 cm in diameter.

In one game, the ball ended up in a pool with so much strength that it almost reached the bottom of it and then went up to the surface.Calculate: a) The force exerted by the pool water on the ball....
more

10/09/20

#### Please help with this question!!!

The cardinality of the set is , while the cardinality of the set is ----------- while the cardinality of the set is--------

Civil Engineering Architecture

10/05/20

#### Subfloor - civil engineering

If i have a cut and fill project, how can i have a subfloor for ventilation? because the earth underneath would block the wind from one direction and it really cannot act as ventilation.

10/02/20

#### Please help with the following math question!!!

Let and and . Which of the following statements is (are) true?(can have many answers)a.)b.)c.)d.)e.)f.) Which of the following statements is (are) true? . Which of the following statements is...
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10/02/20

#### Please help with the power set!!!!

Which of the following is the power set of ? a.) 4b.)c.)d.)e.) ?

10/02/20

#### Please help with the following is a subset!!!

Which of the following is a subset of ?Note: There may be multiple correct answers!a.) b.) c.) d.) e.)

10/02/20

#### Please help with the cardinality of the following set!!!!

What is the cardinality of the following set?(This can have many answers)a.) 0b.) 4c.) 7d.) 3

10/02/20

#### Please help with this question!!!

Consider the set .Which of the following is the corresponding set builder notation for the above set?a.) b.) c.)d.)

Civil Engineering Mechanical Engineering

10/01/20

#### create a gear train or belt system with a mechanical advantage of 300. The gear sizes: 84, 60, 36, (teeth) Sprocket size: 30, 24, 18, 12, 6 (teeth)

09/29/20

#### Please help with logical equivalences!!!

Let and be any given sets. Use set builder notation and logical equivalences to show that .

09/21/20

#### Please help with this question!

In each of the following, decide whether the given quantified statement is true or false (the domain for both and is the set of all real numbers). Provide a brief justification in each...
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09/21/20

#### Please help with this question!

In each of the following, decide whether the given quantified statement is true or false (the domain for both and is the set of all real numbers). Provide a brief justification in each...
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09/21/20

#### Please help with this question!!!

Negate the following statement: Is the negation true or false? Briefly justify your answer.

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