The total capital investment for a conventional chemical plant is $1,500,000 and the plant
produces 3 million kg of product annually. The selling price of the product is $0.82/kg.
Working capital amounts to 15% of the total capital investment. The investment is from
company funds and no interest is charged. Delivered raw materials costs for the product
are $0.09/kg; Labor, $0.08/kg; utilities, $0.05/kg and packaging, $0.008/kg. Distribution
costs are 5% of the total product cost. Estimate a) the manufacturing cost per kg of
product; (b) total product cost per year; (c) Profit per kg of product before taxes and (d)
profit per kg of product after income taxes at 35% of gross profit.
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A gaseous mixture has the following composition: C₂H₄, 57% mol; Ar, 40 mol%; and He, 3% mol. Calculate the volume occupied by 100 mol of this mixture at 120 atm and 25 ° C, using: The ideal gas equation. (Answer: 20.4 L) The generalized compressibility factor and Kay's rule. (Answer: 14.3 L)
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For the the given transfer function G(s) = s2/(s4+7s3+17s2+17s+6)determine
(a) the initial and final values using IVT & FVT,
b) its characteristics (order, pole, zero, order of numerator and denominator, causality, steady state gain), and
(c) the corresponding time domain function
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when would one purposely add an inert material to a feed stream ? illustrate this strategy with an example, and explain the advantages (and disadvantages) of doing this.
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Determine the time required to obtain a Cu deposit of thickness 1 μm when electrodeposition is done at 4 A and 6 A, respectively. The surface area of the substrate is 314 cm2.
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When a seismometer station records the various seismic waves from an earthquake event, which type of seismic wave arrives FIRST?
The P-waves
The S-waves
The surface (Raleigh and Love) waves
The tidal waves
The lazy waves
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Q. When examining the seismic wave signals in earthquakes, which wave(s) do you anticipate will cause the most damage? why?
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Which seismic wave below arrives at the seismic recording station last?
a. Surface waves
b. P-waves
c. S-waves
d. Sound waves
e. Tidal waves
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Match the following earthquake waves to their properties
1.P wave a. causes side-to-side rather than forward-backward motion as the wave travels through the earth
2.S wave b. travels fastest and arrives first after an earthquake
3.Surface wave c. the slowest moving, but often the most damaging of the earthquake waves
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During an earthquake, seismic energy is released and it can travel long distance from source (location of the earthquake) to a seismic station. Path taken by a wave is similar to a ray (line with an arrow) which travels through the earth and arrives at a station. In the last assignment, we look into a case where earthquake is right beneath the station. In this assignment, we are going to investigate a case in which the station is far away from the earthquake, as seen in the diagram below. The ray bends this way because wave speed is generally slower at shallow depth compared to deeper part. Questions 8.1: Why the ray path is bending to be nearly vertical when it approaches the station near the surface? (Hint: think about how horizontal rock layers are stacked on top of each other in terms of wave speed? Which layers have faster wave speed, which ones have slower wave speed? What is the consequence?)
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Seismic waves known as s-waves are
| a. |
the fastest of the seismic waves |
|
| b. |
able to pass through liquids |
|
| c. |
distributed evenly around the globe after an earthquake (not generating a shadow zone) |
|
| d. |
able to move as a shear wave |
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1. Define the following terms: earthquake, seismic wave, seismograph, seismogram.
2. What are the basic types of seismic waves? Which seismic wave travels along the surface of Earth? Which seismic wave travels through Earth's interior?
3. Which seismic wave travels fastest? Which seismic wave travels slowest?
4. What is the difference between an earthquake epicenter and an earthquake focus?
5. How many different earthquake recordings are needed to locate an earthquake epicenter?
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As an EHS Manager for Aggie Refining Co, you’ve just been informed of a tragic contractor fatality on the HF alkylation unit of your refinery. What are your internal & external (e.g., OSHA) reporting responsibilities?
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