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A distance of 1000 feet is to be taped in a manner to ensure a standard deviation smaller than ±0.06 feet. What must be the standard deviation per 100-ft tape length to achieve the desired precision?
Cities cover approximately 0.5% of the Earth's land area, which itself constitutes 29% of the total surface of the planet. What is the probability that the second explosion in part (b) occurs over a city? Assume an equally likely probability of im..
As a consulting engineer you are hired to evaluate the operation and the unit processes within the plant and make recommendations for improvements. You are asked to consider the following units.
A fluid flowing in a pipe 30cm in diameter has a uniform velocity of 4m/s. The pressure at the center of the pipe is 40KPa, and the elevation of the pipe's centerline above an assumed datum is 4.5m. Compute the total energy per unit weight of the ..
The plate is submerged in a liquid is a vertical position with the parallel sides horizontal and the shorter parallel side at the top and exactly in the surface of the liquid. The static moment of the plate with respect to the surface of the liqui..
What will the freeway's density and level of service be before and after the ban? (Assume that the trucks are removed and all other traffic attributes are unchanged)
A slurry containing 20 percent by weight of limestone (CaCO3) is processes to separate pure dry limestone from water. If feed rate is 2000kg/h, how much CaCO3 is produced per hour?
A soil borrow material in its natural state in the ground has a unit weight of 118pcf. Its natural water content is 7%. What is the dry unit weight of this material?
A Silane contains 90.31 % silicon and 9.69 % hydrogen by mass. The compound has a molar mass of 62 g/mol. Determine the compound's empirical and molecular formula.
Cancer is the uncontrolled growth of abnormal cells in the body resulting in tumours that can be benign or malignant (cancerous cells). A proper treatment is necessary to fight with this serious disease.
Make a list of threats which may be vulnerable to the company's information system.
To float a 160 pound man using helium balloons (assume 0.52 cubic feet per inflated balloon). How many balloons would it take? Assume density of air is 1.29 kg/cubic meter and the density of helium is 0.179 kg/cubic meter.
For energy conservation, materials with a high thermal capacity are effective in climates in which the heat flow through the building envelope is:
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