Answered: The top of the lighthouse is observed… | bartleby

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)

5th Edition

ISBN:9781305084766

Author:Saeed Moaveni

Publisher:Saeed Moaveni

Chapter18: Mathematics In Engineering

Section: Chapter Questions

Problem 42P

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Question

The top of the lighthouse is observed from point M at 25.53° angle of elevation and simultaneously from
point N 1720m from point 2 at 53.75° elevation. Find the height of the lighthouse.
Rules:
1. For significant figures and rounding off numbers, provide only the numerical value for the answer.
2. For all the computed values with decimals, use four (4) digits after the decimal.

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For question 3.6 using virtual work method, determine the horizontal deflection of joint C. Write your answers on the space provided. And express it in one decimal place only and in millimeters. For example 1.1mm, 10.1mm, 123.3mm without space between the magnitude and the unit.
1. PACING A pacer walks along a 90m course on fairly level ground for a survey party and counted 99.0, 100.0, 101.50, 103.0, 105.50 and 104.0 paces respectively. He then started walking an unknown distance OP which he recorded 174.0, 175.50, 176,0, and 177.0 paces. Determine the following: A] Unknown distance OP B] Relative Precision of the measurement if the taped length of OP is 155.0 meters.(Simplify to the nearest unit fraction) 2. TAPING A distance of 12.0m is measured with a tape. During measurement, the other end was discovered to be 2.19 m lower. Find the leveled distance.
During a series of tape measurements of a line, following values were determined: 887.57 m, 887.42 m, 887.38 m, 887.24 m, 887.00 m, 887.46 m, 887.42 m, and 887.38 m. Compute for the following: a. Most Probable Value b. Probable Error of a single measurement c. Probable Error of the mean d. Final expression of the most probable length
Please resolve this problem. Solve in 3 decimal places. Check if the solutions are correct. THUMBS UP WILL BE GIVEN!
The solutions and answers should have minimum of 3 decimals for linear measurements and should be in Degree-Minute-Seconds (2 decimals for seconds) for angular measurement, if not whole number. An engineer is tasked to measure a whole line multiple time. Since the length of the line is significantly longer than the steel tape, the engineer decided to measure the line in three segments. First, the engineer measures a 50m known line using the steel tape and find out that the tape is too long with the observation having only 49.2m. With these values, the correction factor of ???? = 50? − 49.2?. After determining such corrections for future calibration, the engineer measured each segments. The following are the observations: 1st Segment: 46.2m, 46.3m, 46.5m; 2nd Segment: 48.3m, 48.2m, 48.1m; 3rd Segment: 32.3m, 32.6m, 32.4m. Determine the complete expression of the most probable value (together with probable error) of the line.
The distances shown in Fig. 3-11(the attached image) are measured. All measurements are uncorrelated and have the same precision. The measured values are l1= 100.010 m, l2= 200.050 m, l3=200.070 m, and l4= 300.090 m. Use the principle of least squares to find the adjusted distance between A and C.
Correct Answer are : 1. D. 110 2. F. 121,000 3. I. 5.32 4. O. 6.78 5. S. 10.26 6. 17.24
Final answer should be mm with 2 decimal places.
Calculate the following: A.Adjusted value of angle A B.Adjusted value of angle C C.Adjusted value of angle F D.Adjusted value of angle H
Based on the data gathered from pacing, the distance from point A to B is 89.56m. It was later found, using a more precise method, that the correct distance is 89.88m. Determine the relative precision of the measurement.
Surveying homework . As shown in the figure, Point A and point B are both sides of the river , but point B cannot be reached. How can we measure the distance between point A and point B? Design a measurement scheme according to what you have learned.
Below are the measured interior angles of a five-sided figure. Solution in this format:Given:Required:Solution: Compute the following: express the value of the angles in degrees° min’ seconds”a. Probable value of angle A. b. Probable value of angle C. c. Probable value of angle D. Station Values of interior Angles No. of measurements A 110° 5 B 98° 3 C 108° 4 D 120° 2 E 105° 4

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