Civil and Environmental Engineering Answers

a. A rigid steel container is partially filled with a liquid at 15 atm. The volume of the liquid is 123200 L. At a pressure of 30 atm, the volume of the liquid is 123100 L.

i. Find the average bulk modulus of elasticity of the liquid over the range of pressure after compression is allowed to return to its initial value. [3]

What is the coefficient of compressibility?

1. Starting from rest, an elevator weighing 8.9kN attains an upward velocity of 5m/s in 4 seconds with uniform acceleration. Find the apparent weight of a man weighing 667.23N standing inside the elevator during the ascent.

Discuss at least five of your favourite crops in relation to optimum temperature, Zone of stress and limits of tolerance

Link AB rotates through a limited range of the angle and as end A causes the skitted link AC to rotate also for the instant represented where beta = 60 degrees and rho=0.6 r.nd/r constant, determine the corresponding values of r > b and e

t best book on analysis of statically indeterminate system using approximation methods (portal frame and cantilever method).

The measure of the linear density at a point of a rod varies directly as the third power of the measure of the distance of the point from one end. The length of the rod is 4 ft. and the linear density is 2 slugs/ft at the center. Find the center of mass of the rod.

A block of wood 250 mm thick is floating in seawater. The wood has a specific gravity of 0.60

while the seawater has a unit weight of 10.10 kN/m 3 . Compute the minimum area of the block

that which will support a man weighing 100kgs.

The side of a wooden cube with spgr of 0.58 is 200 mm. Compute the force needed to

completely submerge the wood in water.

A piece of wood floats in water with 55 mm projecting above the water surface. When placed

in glycerin of spgr = 1.32, the block projects 80 mm above the liquid surface. Determine the

following:

a. Height of the piece of wood

b. specific gravity of the wood

c. Weight of the wood if the cross section is 200 mm x 200 mm

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