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The rocket is fired vertically and tracked by the radar station shown. When reaches 60°, other corresponding measurements give the values r = 30,000 ft, Calculate the magnitudes of the velocity and acceleration of the rocket at this position.
Which emits more SOx per unit amount of electricity produced: a coal-fired plant with a 90% efficient SO2 scrubber or an oil-fired plant with no scrubber? Assume the coal has a heat content of 13,000 Btu/lb and contains 3.5% sulfur, and that the oil ..
Consider a diver weighing 200 lb at the end of a diving board that cantilevers out over 3 ft. The diver oscillates at a frequency of 2 Hz. What is the flexural rigidity EI of the diving board
determine the tangential component of the acceleration of the sled a) just before it reaches B, b) just after it passes C.
The 90-lb boy and 75-lb girl wald towards eachother with constant speed on a 330-lb cart with frictionless wheels. assume that the cart was at rest befor the boy and girl start walking. ith their velocities measured relative to the cart ar 4ft/s to t..
an uncontrolled mosaic is required for an environment project using 1/30000 photos. only the central area of each photo is used for the mosaic- an area about the center measuring 4.5x4.5 inches
Establish a grass cover over a 10ha landfill. The root zone of the grass is 40cm deep. Increase the volumetric water content of root zone from 12% to 24%. How many cubic meters of water are needed?
The blower on an air conditioning unit produces 80 cubic feet per minute of air in the ductwork. What is the air flow in cubic meters per hour
Determine Total Slack time for all tasks by insert new column (Total Slack ) and increase duration of Construct Central Pier (task 12) task by 5 days.
A rubber ball is inflated to a pressure of 65 kPa .At that pressure the diameter of the ball is 240mm and the wall thickness is 1.25 mm.The rubber has a modulus of elasticity E of 3.6 Mpa and a poisoon'd ratio of 0.48.
When filled to capacity, avertical cylindrical un-pressurized storage tank contains water to a height of 14.5m above its base. Given that the height of the tankis 15m, the diameter 9m and wall thickness 18mm
A waste water sample contains 2.092mmol/L NaCl. Calculate the concentration of NaCl in mg/L. What are the mmol/L concentrations of Na and Cl. Na = 23 and Cl = 35.5.
Sand for concrete must include a statement following except:A. grained sharp and hard. B. Does not contain the mud more than 5%. C. Does not contain organic ingredients. D. Large grains of uniform / common.E. Does not contain salt.
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