A body weighing 128 pounds hangs from a spring with constant 1400 lb/ft. The medium, where the body moves, offers a force of opposition to the movement numerically equal to 15 for its instantaneous speed. If the weight is released 2 feet above its balance position, say how fast it should be initially pushed so that after 6 seconds it reaches the lower limit position. Take the constant of gravity as 32 ft/sec^2.

There are several steps need to be considered to fulfill the structural design process. Describe the design process which involves building form and structural arrangement.

“The room eats up sound. So little comes back that I cannot hear anything much.” What type of room is this? Suggest solution / solutions for this problem.Explain briefly

Review Technical Note 87 Bituminous Surfacing –Stripped Seals from VicRoads).

Describe what is meant by a stripped seal and name 4 precautions should you take to avoid the stripping of aggregate from a fresh seal.

x1 + x2 - 2x4 = 2
x1 + x2 + 2x3 + 6x4 + x5 = 8
−2x1 - 2x2 + x3 + 8x4 = −1
3x3 + 12x4 + 2x5 = 9
Let the linear system be given.

a. Find the reduced row eelon form of the combined matrix (augmented matrix) of the system.

b. Is the system consistent? If the system is consistent, find the overall solution of the system.

c. Do all the solutions of the system create a vector space? Please explain.

Write this in your own words: In 100 words or Less

How Sulfate attacks (external/internal), Steel corrosion, carbonation affect the durability of concrete and what prevention methods are used to minimise the impact of these external factors?

Write this in your own words, using no more than 100 words:

Express how the durability of a concrete mixture is affected by the:

Water to Cement Ratio

Cathodic Protection

Permeability

Curing Process

Explain the advantages and disadvantages

2. As it relates to signalized intersection design, what is split phasing and how does it differ from protected only phasing?

What are the new types of novelty materials are needed for innovating the materials for waste to energy and water distribution efficiency to reduce climate change? Write a 600 words on these materials and new materials implemetation and issues.

Q1

a) Many environmental legislation and enforcement are adopted in Malaysia. These legislations need to be updated, Suggest FIVE (5) elements and regulation which should be included in a new version of environmental legislation.

b) Evaluate FOUR (4) challenges among the Malaysian companies to receive ISO14000.

Compute the normal depth (y) in a trapezoidal channel having a bottom-width 10 m, side slopes 1H to 1V and carrying a flow of 30 m³/s. The slope of the channel bottom is S_o = 0.001 and n = 0.013.

A.

B.

C.

D.  

A rectangular channel carries a flow at a velocity of 2.1 m/sec and at a depth of 2.1m. The tail end gate of the channel is suddenly closed. Find the height and speed of the surge. What would be the values of these quantities if the gate is partially closed to release half of the flow?

Malaysia has many alternative resources for energy and the country has started with several projects in the alternative energy sector. However, with the COVID19 Pandemic the price of traditional fuel has gone down. Do You still advise to continue with alternative energy projects and explain your in detail answer?