142 Answered Questions for the topic mechanical engineering

#### Use a double integral to find the area enclosed by x = y − y^2 and x + y = 0.

use double integral to solve this calculus based problem.define the region and set the limits.

#### 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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#### 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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#### 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.

#### 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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#### 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--------

Mechanical Engineering Thermodynamics

10/08/20

#### Final year project

hi I'm just starting my final year and have to complete a final year project. I'm trying to think of some ideas at the moment I have one or two to do with solar power but I am struggling to think...
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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.)

Mechanical Engineering Civil 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)

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

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

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

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

09/21/20

#### Please help with negation of this question!!!

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

#### Please help with this question!

Prove if it is tautology (p→q) ∨ [(p ∨ ¬q ∨ p) ∨ ¬r)] with the use propositional laws. *please use the propositional laws to prove this.

#### Please help with this question!

Prove if it is tautology(p→q) ∨ [(p ∨ ¬q ∨ p) ∨ ¬r)] with use propositional laws.

#### Please help with the negation of the following question!!!

What would be the negation of the statement ?

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

Which of the following quantified statements is (are) true? Let the domain for be the set of all real numbers.[Note: There may be multiple correct answers!]a.) b.) c.) d.) e.) f.)

Mechanical Engineering

09/16/20

#### Metrology is restricted to the measurement of the SI units individually. True or False

09/12/20

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

Show that the compound propositions is a tautology using propositional laws.

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