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1. A waste has an ultimate CBOD of 1,000 mg/L and a kL, of 0.1 day-1. What is its 5-day CBOD?
2. Calculate the ultimate BOD of a waste that has a measured 5-day BOD of 20 mg/L, assuming a BOD rate coefficient of 0.15 day-1.
3. A waste has a ThOD of 500 mg/L, a COD of 48 mg/L, and an ultimate CBOD of 5 mg/L Offer an explanation for the character of this waste.
a spherical pressure vessel has an outer diameter of 10 ft and a wall thickness of 0.5 in. knowing that for the steel used ?all= 12 ski, E= 29 x 10^6 psi, and v= 0.29, determine (a) the allowable gage pressure,
A 1m diameter pipe bend is carrying water with a steady flow rate of 2 m3/s. The bend has an angle of 90o and lies in a horizontal plane. The volume of water in the bend is 1.5 m3 and the empty weight of the bend is 4 kN.
A particle is moving with a velocity of Vo when s=0 and t=0. If it is subjected to a deceleration of a = (-K)v^3, where K is a constant, determine its velocity and position as functions of time.
The key to determining the effectiveness of any customer marketing campaign is the proper use of a control group. A control group is a subset of the customers you're targeting with a particular campaign who you decide will not receive the campaign.
Assuming that the coefficient of static friction µs is the same at A and B, determine the smallest value of µs for which equilibrium is maintained. The weight force acts at the center of the length of the ladder.
where u(t) is in vehicles per minute and t is in minutes. When will the queue clear?
1. Referring to problem 1, in order to meet a 1-hour fire code rating the slab thickness must be at least 4.00. Based on the information given in problem 1 and with a slab thickness of 4.00".a) Determine the bar sizes and spacing required.
Using graphical methods, find the resultant of the systems of concurrent forces shown. Please show work.
Assume Amy needs to build a data-based case to convince her boss and start to "win over" Hank. What data should she gather to help her build the case?
Let P=109N. Q=231 N.a=3.2m. And b=2.9m. Type the unit. N. after typing your numerical answer. Determine the value of the force in member AC. Give a positive value if the member is in tension and a negative value if the member is in compression.
An electronics firm has a contract to deliver the following number of ratios during the next three months; month 1, 200 radios; month 2; 300 radios; month 3, 300 radios. For each radio produced during months 1 and 2, a $10 variable cost is incurred; ..
assessment task critical review the decision making of a failed major constructionproperty project within the uk in the
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