Point A is in between B and C, the distances of B and C from point A are 1.5km and 2.2km respectively. Measured from point A, the angle of elevation of point B is 18°. The difference in the elevations of B and C is 50m. Considering the effect of earth's curvature and refraction, what is the angle of elevation towards C.

Point A is in between B and C, the distances of B and C from point A are 1.5km and 2.2km respectively. Measured from point A, the angle of elevation of point B is 18°. The difference in the elevations of B and C is 50m. Considering the effect of earth's curvature and refraction, what is the angle of elevation towards C.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter1: Introduction To Statics

Section: Chapter Questions

Problem 1.47P: A rifle at A is fired at a target at B. If the speed of the bullet is 1400 ft/s, determine the...

See similar textbooks

Similar questions

A projectile is aimed to hit a mark in a horizontal plane, but falls short by 20m, when the angle of projection is 20°. However, when projected at 45°, it overshoots by 40m. Determine the angle of projection required to hit the target precisely? Also find the actual distance of the target. ANS: X = a =
sdasOne morning, Cfonnie walks from her house to go to a store that is 500 ft, S 40o W from her house. She starts walking 120 ft, SW; then continues walking 100 ft, 10o S of E; then sees a friend who is 700 ft, 30o N of E from where she is. What is her friend’s location, (magnitude and direction) relative to her house? (Ans. 667.54 ft, 21.79o N of E)show complete solution and diagrams
Consider the homogeneous rectangular plate with side lengths a = 9cm and b = 5cm. At a certain instant the velocity of point B is VB = 2.3j m/s and the velocity of point C is Vc = 5j m/s. Determine the speed of the corner point A (m/s) at this instant. Give answer to 3 decimal figures.
One morning, Connie walks from her house to go to a store that is 500 ft, S 40o W from her house. She starts walking 120 ft, SW; then continues walking 100 ft, 10o S of E; then sees a friend who is 700 ft, 30o N of E from where she is. What is her friend’s location, (magnitude and direction) relative to her house? (Answer: 667.54 ft, 21.79o N of E)
Vince Carlo is a world renowned skateboarder who wants to try a new skateboard design. The skateboard has a length of ?AB = 1.30m. Given the figure shown, determine (a) the velocity at point ? and (b) the angular velocity of the skateboard ?? if the velocity at point ? is ?a = 3.1 m/s to the right. Neglect the diameter of the wheels. Note: Use purely RMA Method for velocity calculations. Show the complete and step-by-step solution.
A car moving with constant speed from point A and sinks to point B of the hump. The radius of curvature of the road at point A is ??=120m and acceleration at A is 0.5g. Determine the car speed V if at point B acceleration is limited to 0.3g. Find the minimum radius of curvature ( ??) of road at point B.
A hiker leaves the camp, and using the compass, walks 4 km E, then 10 km S, 6 km E, 7 km N, 12 km W, and finally 10 km N. After three days, the hiker goes astray. Using a diagram, find all the sides and angles after the hiker's walk. Remember to make the diagram and identify the vectors.
A car moving with constant speed from point A and sinks to point B of the hump. The radius of curvature of the road at point A is ??=120m and acceleration at A is 0.5g. Determine the car speed V if at point B acceleration is limited to 0.3g. Find the minimum radius of curvature ( Kb) of road at point B.
My calculated value of acceleration is 12.2 m/s^2 when I drop the object from a height of 3 m. And I need help with the question that is in the attached image.
A passenger vessel is 75o from a dock while a cargo vessel is found 210ofrom the passenger vessel. If the two vessels are 250 nautical miles apart, find the distance of each vessel from the port.
Given the image below, if AB is 0.5m lopng, Rod BD is 1.5m long, and the velocity of point B is 0.5m/s ↖45.0°, what is the values of the lengths of the sides of the triangle formed by points B and D and point C, the instantenous center of rod BD? choices: a. BC = 0, DC = 1.5m b.BC = 1.061m, DC = 1.061m c. BC = 2.12m, DC = 1.5m d. BC = 1.5m, DC = 2.12m
The length of the ship’s water-plane area is 70 m. The lengths of the equidistantly spaced half ordinates commencing from forward are as follows: 0, 5.2, 6.4, 7.0, 6.0, 4.9, 0.3. Find the area of the water-plane.