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A constant flow of water, 30 lbm/s, enters a cylindrical container from the top. At the bottom, an opening allows water to drain out at a rate, in lbm/s, that is proportional to H(t), the instantaneous height of water in the barrel, in ft: rate of water leaving from bottom = 9*H(t) . The circular base of the cylindrical container has an area of 3 ft^2 and the density of water is 62.4 lbm/ft^3. If the barrel is initially empty, plot the height of the water in the container as a function of time and explain the main features of the plot.
An investor is considering buying a 20-year corporate bond. The bond has a face value of $1000 and pay 6% interest per year in two semiannual payments. To receive 8% interest, compounded semiannually, how much should be paid for the bond
a lagoon is 20 ft by 80 ft with a depth of 5.5 ft .Wastewater from households flow into the lagoon at 260 gal/day .How many days would it take to fill the lagoon
At normal atmospheric conditions, approximately what pressure in psi must be applied to water 70 F to reduce its volume by 2 %
Describe the given types of bonding agents found with clay minerals. a) hydrogen bond b) covalent bond c) van der walls forces d) james bond e) ward bonds f) war bonds.
If the time required to pay for parking is exponentially distributed with a mean of 15 seconds, find the average time in system.
A system consists of a gas confined between a cylinder and piston such that work and heat may cross the boundary. What type of system is that. What type of system is a free body as used in mechanics or civil engineering.
Assuming constant acceleration, determine how long the train blocked the crossing. Dis- regard the width of the crossing.
find a chlorine demand occurring in your drinking water distribution system (series of pipes that carry drinking water throughout a city), yet there is no increased chlorine demand in the water going through the treatment plant
What do you understand by the term durability? Compared to other considerations, how much importance should be given to durability in the design and construction of concrete structures?
Calculate the precentage of carbon hydrogen and oxygen in ethanoic acid.
Estimate the constant rate of withdrawal (in m^3/s) from a 1375 ha reservoir in a month of 30 days during which the reservoir level dropped by 0.75 m in spite of an average inflow into the reservoir of 0.5 Mm^3/day.
A 4 meter long steel plate with a rectangular cross section (10mm x 50mm) is resting on a frictionless surface under the sun. The plate temperature is measured to be at 40 degrees Celsius.
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