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A small package of weight W is projected into a vertical return loop at A with a velocity Vo. The package travels without friction along a circle of radius "r" and is deposited on a horizontal surface at C. For each of the two loops shown, determine (a) the smallest velocity Vo for which the package will reach the horizontal surface at C, (b) the corresponding force exerted by the loop on the package as it passes point B.
What is the tension in the cable connecting the boat to the pier Angle of spray 50 degrees off horizontal axis and is spraying toward the pier and pushing the boat away from the pier.
Two piezometers are located 1000 ft apart with the bottom located at depths of 50 ft and 350 ft, respectively, in a 400-ft-thick unconfined aquifer. The depth to the water table is 50 ft in the deeper piezometer and 40 ft in the shallow one.
If an additional 11ft lane is added (each direction) and all other factors stay the same, what will be the new level of service?
The allowable shearing stress is 15 ksi in the steel rod AB and 8 ksi in the brass rod BC. Knowing that the torque of magnitude T=10 kip * in. is applied at A, determine the required diameter of a) rod AB, b) rod BC.
Calculate the ozone column amount in DU, corresponding to the pressure profile and ozone concentrations given above. Recall Avogadro's number, NA = 6.0 × 1023 molecules per mole, from which one can calculate [O3]= ..
Footings for a structure are to be built beneath a basement slab on a clay soil at a depth of 20ft below present ground level. The groundwater table is 15 ft below the ground surface. The soil-void ratio is about 0.87.
The student strikes the sign at a speed of 25 mi/h. if the student was travelling at 65 mi/h when the sign was first spotted, what was the student's associated perception reaction time
Water with a static pressure of 1.96kN/M2 flows through an 800 mm diameter pipe. A pitot tube pressure gage in this pipe reads a pressure of 5.88 kN/M2. How do you determine the volume flow rate (Q) of the water? (Q = 1.40 M^3/sec, V=2.79 M/sec)
Suppose a person invests a total of $10,000 in two accounts. One account earns 8% annually, and the other earns 9% annually. If the total interests earned from both accounts in a year is $860, how much was invested in each account?
a ship has a cross-sectional area of 4000 ft^2 at the water line when the draft ( depth below the water line of the vessel bottom) is 10 ft. How many pounds of cargo will result in an increase of draft of 2 in ( specific weight is 64 Ib/ft^3 )
Water at 20ºC flows at a velocity of 2 m/s in a 200-mm diameter horizontal ductile-iron pipe. a) Estimate the friction factor in the pipe, and state whether the pipe is hydraulically smooth or rough
Twenty years of annual maximum rainfall depths are given below. Determine the rainfall depths to be used for storm structure design for the following annual return periods: 2, 5, 10, 25, 50, & 100 year.
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