Which is more likely to contain high DO levels - a shallow running cr.pdf

•

0 likes•2 views

Which is more likely to contain high DO levels - a shallow running creek or a deep still lake? Why? Solution A shallow running creek will contain high DO levels as they are more affected with wave action and photosynthesis at the surface as compared to a deep still lake. Also the stratification of deep still lake which inhibits the DO levels,.

Education

More from alrahmancollection

What nationality or ethnic group endured persistent racial discrimination, punishing labor conditions, and lack of labor and safety protections in California during the 1880s through the early 1900s? Select one Chinese Mexicans Current and former African slaves Japanese Native Americans Upton Sinclair, the outspoken writer and socialist easily won the Democratic nomination for Governor in 1934--what was his campaign called? Select one End of Slavery in California End of Immigration in California End of Poverty in California End of Racism in California End of Muckraking in California Solution Chinese nationality. The gold rush in California led to the immigration of chinese to work as laborers. The United States and China signed the Burlingame Treaty in 1868. U.S. Congress adopted the the Chinese Exclusion Act of 1882. End of Poverty in California The End Poverty in California movement (EPIC) was a political campaign started by Upton Sinclair. Sinclair\'s campaign for Governor of California in 1934 was based on this movement..

What nationality or ethnic group endured persistent racial discrimina.pdf

alrahmancollection

What multiple l32 of row 2 of A will elimination subtract from row 3 of A? Use the factored form What will be the pivots? Will a row exchange be required? Solution yes there will be a exchange of rows the bottom row need tp go uo beacuse it has all elements in it hence it can be used to reduce other rows as well other rows have ZERO in them 1 4 1 will be the pivot and 5 7 8 will be the pther pivot of second matrix !!!.

What multiple l32 of row 2 of A will elimination subtract from row 3 .pdf

alrahmancollection

What makes a sample a good one or a bad one Explain further using .pdf

alrahmancollection

Why were the taxes higher this year(1942) SolutionElaborative .pdf

alrahmancollection

Why do I want to add a pole to a closed loop transfer function. Keep your answer short. What are the types of stabilities? What type of system is marginally unstable. Solution Problem 3 Effect of adding pole to closed loop transfer function The addition of left half pole tends to slow down the system response. The effect of addition of pole becomes more pronounced as pole location drifts away from imaginary axis. Addition of right half pole will make overall system response to be an unstable one. Problem 4 Different kinds os stabilities are :BIBO Stable, Marginally Stable, Conditionally Stable, Uniformly Stable, Asymptoticly Stable Problem 5 When the poles of the system in the complex S-Domain exist on the complex frequency axis (the vertical axis) ,the system exhibits oscillatory characteristics, and is said to be marginally stable. A marginally stable system may become unstable under certain circumstances, and may be perfectly stable under other circumstances. It is impossible to tell by inspection whether a marginally stable system will become unstable or not..

Why do I want to add a pole to a closed loop transfer function. Keep .pdf

alrahmancollection

Why is Inflow and Infiltration (I/I) an issue for wastewater treatment plants? Explain in terms of what causes it, the sources of I/I, and its impact on hydraulic capacity and treatment efficiencies at wastewater treatment plant? Solution Infiltration is due to the excess water that sometimes seeps, trickles, or flows into old or damaged collection systems from the surrounding soil. Inflow is due to additional unwanted water that enter collection systems from above ground sources. For example , due to excess rainfall, from private properties Causes: a) Infiltration: 1. poor soil conditions in which sewer lines are laid 2.poor construction materials or shoddy construction and workmanship b) Inflow 1.Poor planing of the sewerage system 2.draining of swamps, wetlands, or low-lying or flooded areas into collection systems through connect i o n s or leaky manhole covers. Effect on plant 1. Due to Inflow and infiltraion, there exists a uncertainity of amount of water is about to enter the waste water plant. Greater than anticipated flow comes to plant 2. As we know waste water treatemnt plant depends on microbial activity, change in loading rate causes death of microorganisms. 3.Increases treatment cost 4.Decrease in efficiency of plant.

Why is Inflow and Infiltration (II) an issue for wastewater treatmen.pdf

alrahmancollection

Why is groundwater sometimes a problem at construction sites? How tan the problems be solved? Solution Distress or failure of existing pavement; • Wet spots in pavement or subgrade material piping through cracks or joints; • Undulating pavement surface; • Unlined irrigation canals on slopes uphill of highway; • Cattails or wetlands vegetation growing in borrow ditch or on slopes; • Seepage from cut slopes or natural slopes; • Evidence of slope instability such as scarps, old landslides, and trees at adverse angles..

Why is groundwater sometimes a problem at construction sites How tan.pdf

alrahmancollection

Why is concrete such a widely used construction material? Concrete is basically, (fine and coarse), abd paste\" (water and Portland cement) The devolvement of cementing materials traces back to the Egyptians and Romans. In 1824, Joseph Aspdin produced a Portland cement from a heated mixture of and .in 1872 the first Portland cement plant was opened in. A material that reacts with water to form a hardened mass. The chemical reaction between water and Portland cement, that leads to the formation of hardened concrete. A by-product of the hydration reaction between water and Portland cement. The leaching of free lime. Caused by a reaction of chemicals in the mix water with the cement paste, usually leaving a white stain Solution portland cement is from a heated mixture of clay and calcium carbonate cement: it is the material which reacts with water and forms a hardend mass hydration of cement : the chemical reaction between water and cement , that leads to the formation of hardend mass tricalcium silicate C3S : it is the by product of hydration reaction between water and cement compaction of concrete : it increases the density of plastic concrete by expelleing the entraped air water cement ratio : the ratio of mass of water to that of cement in batch of plastic concrete admixtures : any ingredient other than cement , water, or aggregates , that is added to a batch of plastic concrete to impart certain desirable properties to the plastic or hardened concrete flashing: the ability of cemtn to maintain a stable volume after setting.

Why is concrete such a widely used construction material Concrete i.pdf

alrahmancollection

Why is important to pay your taxesSolutionImportant tool for n.pdf

alrahmancollection

Why do the mean, median, and mode coincide at 0 on the normal curve Solution The shape of the normal curve is bell shaped (graphically ) The curve has a single peak thus it is unimodel. The mean of a normally distributed population lies at the centre of its curve. Because of the symmetry, the median (Positional average) a mode (concentration of frequency) also lies at the centre. Thus in normal distribution mean, median and mode all coincide at zero..

Why do the mean, median, and mode coincide at 0 on the normal curve.pdf

alrahmancollection

What is the role of a jury in a criminal case? Is it important or unnecessary ? Can I get a thesis statement for this ? What is the role of a jury in a criminal case? Is it important or unnecessary ? Can I get a thesis statement for this ? Solution ROLE of JURY Juries are seen as playing an important role in our legal system. Juries have been used as part of our legal system for more than one thousand years but it was not until trial by ordeal was done away with in 1215 that they became an integral part of our criminal justice system. In the same yearMagna Carta also formally acknowledged the principle of an individual’s right to trial by their peers. The jury we are now familiar with and whose role it is to “faithfully try the defendant and give a true verdict according to the evidence” is relatively young. It is only over the last 300 years or so that a jury has become established which is as independent as we now see it and which does not have any influence on law making or any knowledge of the defendant. Set out below is the role of juries in criminal cases. Juries are used in trials in the Crown Court. The jurisdiction of the Crown Court provides for the hearing of more serious offences on indictment. The offenders will have first appeared in the Magistrates’ Court and been committed or indicted to trial at the Crown Court. If there is a not guilty plea there will be a jury trial. If a guilty plea is entered then there will be no need for a trial and the Judge will decide upon the appropriate sentence. The jury is randomly selected from persons entered on the electoral register and they must not be involved in any way with the case. They are required to make an informed decision about whether the accused is guilty or innocent. The jury is told by the trial judge that they must base their decision upon the evidence put before them during the trial and not upon anything else, including things said outside of the court or anything they may have read. The jury must therefore listen to the evidence but their role may also include being made aware of physical exhibits and photographs and in some complex cases may include accompanied visits to crime scenes. Towards the end of the trial, and once all the evidence has been presented by both sides, it is the job of the trial judge to assist the jury in their task by summing up the evidence and directing them as to what the law is. After the summing up, the jury are put in the hands of a jury bailiff who is sworn in and made aware of their duties by the trial judge. The jury leaves the court and must retire to a jury room where they are required to deliberate and come to a decision as to whether the defendant is guilty or not. The jury will deliberate in private. Despite any direction by the trial judge about the law and the facts of the case at the end of the trial, one feature of the jury system is that the jury are free to make up their own minds, free from any outside influence and pressure. Th.

What is the role of a jury in a criminal case Is it important or.pdf

alrahmancollection

What is the reuse ratio? Propose a comprehensive communications infrastructure for a developing country. Justify your recommendations. Solution The proposed communications infrastructure for a developing country is wireless communications. Wireless communications works most efficiently when supported by satellite, infrared, microwave and radio communications and also it is cheap to install. Its most important advantage is its mobility. It has specific security system for protection. Wireless communications provide continuous contact with the provider through the SID (system identification code) via the cell base station (BS). The capacity of wireless communication system can be increased by adding complexity and relaxing the channel allocation rules like Cell splitting, Allocation of new channels, Frequency borrowing and Alternative multiple access architectures..

What is the reuse ratio Propose a comprehensive communications infr.pdf

alrahmancollection

which states dont authorize no par stockSolutionNo Par s.pdf

alrahmancollection

Which salt is more soluble in water: CaCO_3 vs. MgCO_3 ? What are two major problems associated with hard water? List two technologies for water softening. What is the pH range of most natural waters? Name three weak bases found in natural waters. River A with a flow rate of 16,000 m^3/d flows into a well-mixed lake with a volume of 1,000,000 m^3 throughout the year. River B and river C leave the lake. A boat in the lake has polluted the lake with an organic pollutant. Microbes present in the lake are capable of biodegrading this pollutant with a first- order decay constant of 0.01 d^-1. Determine the percent removal of pollutant in river C (or the percent decrease of the pollutant concentration in river C) after 180 days. The mineral analysis in mg/L as ion for a water source is: Ca^2+ 100 Mg^2+ 20 HCO_3^- 200 CO_2 20 How much lime and soda are required (in mg/L as CaCO_3) to soften the water to 100 mg/L as CaCO_3? A water sample contains 20 mg/L of sodium hydroxide. How much manganese (II) is soluble in this water? Determine the percent dissociation of bicarbonate in this water. Solution 1. (a) MgCo3 is more soluble in water than CaCo3. (b). Problems associated with hard water: Laundering: Clothes washed in hard water often look dingy and feel harsh and scratchy. The hardness minerals combine with some soils to form insoluble salts, making them difficult to remove. Soil on clothes can introduce even more hardness minerals into the wash water. Continuous laundering in hard water can damage fibers and shorten the life of clothes by up to 40 percent. Bathing: Bathing with soap in hard water leaves a film of sticky soap curd on the skin. The film may prevent removal of soil and bacteria. Soap curd interferes with the return of skin to its normal, slightly acid condition, and may lead to irritation. Soap curd on hair may make it dull, lifeless and difficult to manage. Dishwashers: When washing dishes, especially in a dishwasher, hard water may cause spotting and filming on your crockery. The minerals from hard water are released faster when it comes into contact with heat, causing an increase in the amount of spotting and filming that occurs. This problem is not a health risk, but it can be a nuisance to clean and reduce the quality of your crockery. (c) (i) Ion Exchange : The oldest method of treating hard water, ion exchange uses a process of removing calcium and magnesium from the water by exchanging each calcium ion for two sodium ions. (ii) Distillation: Distillation is a water purification process that uses a heat source to turn the water into its gaseous form and thereby separate it from contaminants and other undesirable elements commonly found in ground and surface water. Distillation heats raw (untreated) water until the water reaches its boiling point and begins to turn into a gas. (iii) Membrane Technology: Membrane technologies like RO (reverse osmosis) push water through a semi-permeable membrane to filter out nearly all dissolved .

Which salt is more soluble in water CaCO_3 vs. MgCO_3 What are tw.pdf

alrahmancollection

What is the remainder when 824 is divided by 3Solution824=4.72.pdf

alrahmancollection

Which one of the following activities is a source of cash? Decreasing long-term debt Increasing inventory Repurchasing shares of stock Increasing fixed assets Decreasing accounts receivable Which one of the following is a use of cash? Issuing new shares of stock Increasing accounts payable Decreasing inventory Decreasing fixed assets Increasing accounts receivable Solution a)Decreasing accounrt receviable meaning we are receiving our account receivable back meaning receiving cash b)increasing accounrt receviable meaning we are not collecting our money as of now meaning we are using our cash to sell our product.

Which one of the following activities is a source of cash Decreasin.pdf

alrahmancollection

Which of the four presidents on Mount Rushmore was not a surveyor? Abraham Lincoln George Washington Theodore Roosevelt Thomas Jefferson Which of the following is true? Nutation happens every 26,000 years Precession happens every 18.6 years nutation is a wobble centered at the earth\'s mass center about the polar axis The Clark 1866 Ellipsoid best fit North America Solution 3. among these, Theodore roosevelt is not considered as surveyor 4 . option d, the clark 1866 ellipsoid best fir north america.

Which of the four presidents on Mount Rushmore was not a surveyor A.pdf

alrahmancollection

Which of the following statements regarding rational voter ignorance are true? Check all that apply. The principle of rational voter ignorance explains a low voter turnout in an election. Rational voter ignorance occurs when people decide not to vote after studying and rejecting the political positions of all candidates involved in the election. A rationally ignorant voter may choose a political candidate based simply on party affiliation or public appearances rather the candidate\'s positions on a wide range of issues. Solution 1st option. Rational voter has ignorance problem and they just are lazy to come to vote that shows it Some voters choose not to vote, In some countries there is an option called NOTA(none of the above) Yes its rational but not rationally ignorant.

Which of the following statements regarding rational voter ignorance .pdf

alrahmancollection

Which of the following statements is true Notes receivable are alwa.pdf

alrahmancollection

Which of the following statements is correct? A. The division between public goods and common resources is clear-cut. B. The free-rider problem prevents governments from supplying public goods. C. Environmental degradation is an example of a free rider problem.. D. Some goods, such as lighthouses, may be either private or public goods. Solution The following statement is correct: A: The division between public goods and common resources is clear cut. Because Public goods are neither excludable nor rival. Examples include national defense, knowledge, uncongested nontoll roads, and so on. Whereas, Common resources are rival but not excludable. Examples include fish in the ocean, the environment, congested nontoll roads, and so on..

Which of the following statements is correct A. The division betwee.pdf

alrahmancollection

More from alrahmancollection (20)