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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
A sample of 10 television tubes produced by a company showed a mean lifetime of 1200 hours and a standard deviation of 100 hours. Estimate (a) the mean, (b) the standard deviation of the population of all television tubes produced by this company.
Determine the tension T in the cable and the magnitude of the pin reaction at O
The block is acted by its weight W=200 lb, a horizontal force Q=600 lb, and the pressure P exerted by the inclined plane. The resultant R of these forces is up and parallel to the inclined thereby sliding the block up it. Determine P and R.
Calculate the density in g/cm^3 of Ba and its atomic radius.
Consider a gas mixture that consists of three components. The number of independent variables that need to be specified to fix the state of the mixture is
Consider the two-bar truss shown in the figure below, subject to a concentrated load F. Both bars have the same cross-sectional area A1=A2=A. As well, θ1=θ2=θ, and the dimension L is constant. Assume the bars are made of the same material with ela..
Why rafting is required and what precautions should be taken during rafting? And what is the alternate of rafting?
At the bottom of a loop in the vertical plane an airplane has a horizontal velocity of 315 mi/h and is speeding up at a rate of of 10ft/s^2. The radius of curvature of the loop is 1mi
Each of the following either (a) violates the first law, (b) violates the second law, or (c) is correct. For each indicate which law (if any) is violated. Justify your answers with appropriate calculations
explain in your words the procedure of the Gauss-Newton method used to control some parameter (z) to meet some expected performance (y) using controllable parameters (A,B)
An invert (surface of the bottom arc) level of 4 m from the ground surface is proposed for a water pipe 2 m in diameter. Draw the soil profile and locate the water pipe. Explain any issue (justify with calculations) with locating the water pipe at..
A solution contains 300 mg/L of acetic acid. Determine the pH of the solution if an equivalent amount of sodium hydroxide (NaOH) is added to it. Determine the concentration of NaOH required (in mg/L).
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