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You must determine the ground clearance of an overhead electrical cable. Surveyor B is positioned directly under the cable (surveyor B's position can be checked by his sighting past the string of a plumb bob, held in his outstretched hand, to the cable); surveyor A sets her clinometer to 45º and then backs away from surveyor B until the overhead electrical cable is on the cross hair of the leveled clinometer. At this point, surveyors A and B determine the distance between them to be 43.6 ft. Surveyor A then sets the clinometer to 0º and sights surveyor B; this horizontal line of sight cuts surveyor B at a distance of 3.8 ft above the ground. Determine the ground clearance of the electrical cable
Photographic cameras on spy satellites supposedly can read the license plate of a car on the ground.About how far apart would you estimate the digits on a license plate are? If the satellite orbits at a height of 160 km, about what angular resolution..
A bar is under uniform axial loads. AB is 1 foot and has a area of .5 in^2 and BC is 1 foot and has an area of .3 in^2. AB has a 1000lb force putting it under tension and BC has a 500lb force putting it under compression
Determine from the code table in Figure 1.2 whether a building you are currently designing could be built of Heavy Timber construction and what modiÞ cations you might make in your design so that it will conform to the requirements of Heavy Timber..
A Timber power-line pole is 10 in. in diameter at its base where it is solidly embedded in concrete. The pole extends 20 ft vertically upward from its base and is subjected to a horizontal pull of 300 lb at its top.
Vehicles arrive at the booth at a rate of 4 vehicles per minute. The attendent opens the booth and improves the service rate over time following the function u(t)= 1.1 +0.3t, where u(t) is in vehicles per minute and t is in minutes.
If a large pool of water was rotating the same speed as an amusement ride, how far would the surface of the water rise, between the where the chairs are hanging when the ride stopped- which is 15ft from the center support column, and where the chairs..
determine the composition of the vapor phase of this mixture. Saturation pressure of NH3 at 30°C is 1167.4 kPa.
A wastewater is discharged to a stream with a reoxygenation constant of 0.5 day-1 and a velocity of 1 m/sec. The oxygen saturation concentration in the stream is 11 mg/L.
a volumen of 20 cu ft of air at pressure of 50 psig is heated and expanded and to 30 cu ft and 40psig find the changes in the energy of air in jouls.
Determine (a) the initial and final temperatures, (b) the mass of liquid water when the piston first starts moving, and (c) the work done during this process. Also, show the process on a P-v diagram.
A section of highway has a speed-flow relationship of the form "q = au^2 + bu" It is known that at capacity (which is 3100 veh/hr) the space mean speed of traffic is 28mi/hr.
Clouds can weigh thousands of pounds due to their liquid water content. Often this content is measured g/m^3. Assume that a cumulus cloud occupies a volume of one cubic km, and its liquid water content is 0.2g/m^3.
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