A mechanical device which when installed in the pipe will extract energy from the system. | MATHalino

A mechanical device which when installed in the pipe will extract energy from the system.

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Multiple Choice Questions (MCQ) uploaded before May 2024

It is an overflow structure built across an open channel for the purpose of measuring and controlling the flow.
A man passed one-sixth of his life in childhood, one-twelfth in youth, and one-seventh more as a bachelor.
An airline does a survey of the weights of adult passengers traveling on its flights. It finds that 5% weigh more than 84.3 kg and 2% weigh less than 57.2 kg.
The median of a right triangle drawn to the hypotenuse is 3 cm long and makes an angle of 60° with it. Find the area of the triangle.
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If the value of the piece of property decreases by 10% while the tax rate on the property increases by 10%, what is the effect on the taxes?
Find the capacity of a conical vessel that is made from a semi-circular tin of radius 2.5 m.
If $\theta$ is an acute angle of a right triangle where $\sin \theta = x/2$, compute the value of $\sin 2\theta$ in terms of $x$.
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Find the area of a sector of a circle of radius 6 cm and a central angle of 60°.
From the following figure, which of the following is equal to $\tan (\theta/2)$?
Aedan opened his Science book and noticed that the product of the two pages in front of him was equal to 1122. What were the sum of the numbers of those pages?
If x + y = 5 and xy = 6, find the value of x^3 + y^3.
In how many ways can 4 couples be seated at a round table with the men and women alternating?
A combination lock has 60 different positions. To open the lock, the dial is turned to a certain number in the clockwise direction, then to a number in the counterclockwise direction, and finally to a third number in the clockwise direction.

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