Multiple Choice Question: In a truss, when three members meet a joint, two of the members are parallel, and the joint carries no load, the third non-parallel member is a zero-force member.

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Orphaned Multiple Choice Questions (MCQ) due to changes of exam system.

A radioactive substance is decaying (it is changing into another element) according to the formula y = Ae^(-0.2x)
Let $a$, $b$ be the lengths of the two legs of a right triangle, and $c$ be the length of its hypotenuse. What is the length of the altitude to the hypotenuse?
Find the exact value of $\arccos (\tan 45^\circ)$
Which of the following is the value of x^2 + 1/x^2 when x + 1/x = 5?
Solve for D in the given partial fraction:$$ \dfrac{4x^2 + 7x + 8}{x(x + 2)^3} = \dfrac{A}{x} + \dfrac{B}{x + 2} + \dfrac{C}{(x + 2)^2} + \dfrac{D}{(x + 2)^3} $$
A product has a current selling price of P325. If its selling price is expected to decline at the rate of 10% per annum because of obsolescence, what will be its selling price four years hence?
An arch 18 m high has a form of a parabola with a vertical axis. The length of a horizontal beam placed across the arch 8 m from the top is 64 m. Find the width at the bottom.
Three numbers whose sum is 42 are in GP. If 1 is subtracted from the first, 3 from three from the second, and 11 from the third, the remainders will be in AP. Find the smallest number.
Find $y'$ if $x = 2 \arccos (2t)$ and $y = 4 \arcsin (2t).
The Department of Health encourages elderly people to have a flu vaccination each year.
Find the volume of a circular cone having a base radius of 20 cm and axis 30 cm, if the axis makes an angle of 60° from the base.
At an ordinary rate a man can row the distance from Pasig to Manila, about 15km, in 5 hours less time than it takes him to return.
In pipe flow, applying the Bernoulli equation from one section (upstream side) to another section (downstream side) the total energy on one section (downstream side) is expressed as:
A series of siphon pipes of uniform diameter are to draw water to irrigate the farm instead of using the traditional method of flooding the area.
The pressure P of wind on a sail varies jointly as the area A of the sail and the square of the velocity V of the wind.