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A large part of Holland is below sea level.Earthen dikes keep the sea at bay. There's a Holland legend of aboy who uses his finger to plug a hole in the dike and saves thecountry side. Assume the center of the hole is located 3.0 metersbelow the sea level. The hole is the same size as the child’sfinger, a diameter of 1 cm. How much force would the child have to exert against the sea pressure in order to keep the sea at bay? Doyou think a child could do this? (density of seawater is1030kg/m3).
A horizontal angle was measured by repetition six times with a total station. If the initial display reading was 21o33'18" and the final reading was 129o20'04", determine the value of the angle to the nearest second.
Determine the slenderness ratio of a 5 m column with built in ends if its cross- section is (a) circular with a radius of 40mm and (b) 50 mm square. Use the concept of effective length.
What is the overall specific gravity of a sample initially packaged with a moisture content of 3.5% below the optimum, then saturated (Assume that the soil sample can be compressed fully saturated with water without the occurrence of variation in ..
Design a rectangular channel contraction from width b1 (upstream) to width b2 (downstream). Assume uniform flow approaches the contraction (i.e. normal depth approaching the channel contraction).
A sample of 20 yields a mean 32.4. Test the two sided hypothesis that the sample drawn from a population with a mean of 35 for the following cases. (a) if a variance of the population is 33; and (b) if the variance of the population is unknown,
The entrance to the pipe is reentrant, with ke = 0.9, and the nozzle loss coefficient is 0.045. Find the flow rate and the pressure head at the base of (entrance to) the nozzle.
Imagine a virtual expressway having 3 lanes. The administrating agency wants to detect traffic accidents in 5 minutes wherever they occur to dispatch an emergency response unit.
horizontal pipe, and the fanning friction factor is f_F = 0.0060. what error in the pressure drop would ensue if the assumption were made that the flow was laminar, abandoning the previous value of the friction factor.
following results were obtained from direct shear tests on specimens of a sand compacted to the in-situ
Given: elastic modulus of steel is 200 GPa, yield and ultimate tensile strength of steel are 600 and 750 MPa, respectively.
A 1.0-m rigid horizontal support is hung by two cables. One cable is brass and The other cable is high-density polyethylene plastic. At room temperature (21°C), the cables measure 3.50 m vertically.
If the dry-rodded unit weight of an aggregate is 105 lb/ft3 (1680 kg/m3) and its specific gravity is 2.65, determine the void content.
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