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An inflatable backyard swimming pool is being filled from a garden hose with a flowrate of 0.12 gal/s.
a. If the pool is 8 ft in diameter, determine the time rate of change of the depth of water in the pool.
b. Suppose that the pool has a drain port with a diameter 0.5 in. Immediately after the drain is opened, the rate of change of the depth of the water in the pool is observed to decrease to 80% of the value calculated in part (a). Determine the average fluid velocity at the drain port.
A worker ties a rope oflength 12 m to he tower at A and exerts a constant force of 160 Non the rope. (a) Express the tension in each cable as a function oftheta knowing that the resultant of the tension in the cables andthe rope is directed downwa..
Using the Maxwell relations, determine a relation for (∂s/∂P)T for a gas whose equation of state is P(v - b) = RT.
A pressure gage connected between the upstream pipe and throat section shows a pressure difference of 29 kPa. The gasoline velocity in the throat section is 14 m/s. What is the velocity (m/s) in the upstream pipe
if gas is available at $0.50 per therm and the efficiency of utilization is 80 percent, what is the cost of heating energy in dollars per million Btu
Soil with a unit weight of 19.65 kN/m^3 is loaded on the ground surface by a strip load of 1.5 m wide. The strip load is 365 kN/m of wall length. Determine the vertical stress increment due to the strip load and the total pressure both at point 3 m b..
The 75 lb block is released from rest 5 ft above the plate. Determine the compression of each spring when the block momentarily comes to rest after striking the plate.
The schedule can be developed either by hand or using scheduling software (Microsoft Project, Primavera SureTrak, etc.), just as long as the Activity Data Sheet is completed. (Hint: Project and Suretrak will automatically create a network diagram ..
The jib crane supports a load of 750 lb from the trolley which rides on the top of the jib. The members of the crane are pinned together at B, E, and F and supported by a short link BH.
Explain why data should always be entered directly into the field book at the time measurements are made, rather than on scrap paper for neat transfer to the field book later.
a container is supported by three cables that are attached to a ceiling. Determine the weight W of the container, knowing that the tension in cable AB is 6 kN
Concrete mix with a 3 in slump, w/c ratio of .5, and sand with a fineness modulus of 2.4 contains 1700 lb of coarse aggregate.
Air can be assumed as a di-atomic ideal gas. Find the final temperature and the amount of work ( in kW) required for air compression at a rate of 100 mol/s , from an initial condition of 1 bar an 25 C to 10 bar; for the following ways:
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