Question

In: Civil Engineering

Given a magnetic azimuth in 1993 of 169° 18', and a current magnetic bearing of S...

  1. Given a magnetic azimuth in 1993 of 169° 18', and a current magnetic bearing of S 8° 26' E. If the current magnetic declination is 4° 15' W, what was the declination in 1993?

Solutions

Expert Solution

True bearing remain constant with time. to obtain declination in 1993 first we need to find out true bearing of that point from given data:

based on current bearings:

True bearing = Magnetic bearing (Current) - Declination (Current)

Note: Here current declination is toward west direction and this declination will be deducted from magnetic bearing.

Magnetic bearing =

In WCB =

Magnetic bearing=  

True Bearing = Magnetic bearing (Current) - Declination (Current)

=

=

In 1993 magnetic bearing was and true bearing is same which is

So magnetic declination = magnetic bearing - true bearing

=

=

Magnetic declination in 1993 was .


Related Solutions

What magnetic bearing is needed to retrace a line for the conditions below.. 1875 Magnetic Bearing...
What magnetic bearing is needed to retrace a line for the conditions below.. 1875 Magnetic Bearing 1875 Declination Present Declination a N 650 35’ E 30 30’ W 20 30’ E b S 730 10’ W 20 20’ E 10 15’ W c N 890 55’ W 00 30’ W 40 15’ E d S 450 30’ E 70 15’ E 50 20’ W
In 1900, the magnetic bearing of a line was N 25° 30’ W and the magnetic...
In 1900, the magnetic bearing of a line was N 25° 30’ W and the magnetic declination was 4° 20’ E. In 2020, the magnetic declination at this location is 1° 15’ E. What is the present magnetic bearing? CORRECT ANSWER IS N 22° 25’ W
18) A proton travels with a speed (v) of 5m / s in a 2T magnetic...
18) A proton travels with a speed (v) of 5m / s in a 2T magnetic field (B). The angle between v and B is 22nd. What is the magnitude of the magnetic force acting on the proton? (a) 14.8x10-19N (b) 6x10-19N (c) 0N (d) 16x10-19N 19) An electron experiences a magnetic force FB = (i 2.4 - j 1.8) x10-13N when it passes through a field magnetic B = k 0.7T. The magnitude of the electron velocity is: (a)...
The following are balanced interior angles to the right for a five-sided traverse. Given the Azimuth...
The following are balanced interior angles to the right for a five-sided traverse. Given the Azimuth of course AB is 250°00’00”, compute and tabulate the azimuths for each side of the traverse. A = 82°13’15” B = 106°35’18” C = 28°45’06” D = 205°14’56” E = 117°11’25”
The following are balanced interior angles to the right for a five-sided traverse. Given the Azimuth...
The following are balanced interior angles to the right for a five-sided traverse. Given the Azimuth of course AB is 250°00’00”, compute and tabulate the azimuths for each side of the traverse. A = 82°13’15” B = 106°35’18” C = 28°45’06” D = 205°14’56” E = 117°11’25”
Ali sails on a bearing of N20E for 18 km then S85E for 6 km ....
Ali sails on a bearing of N20E for 18 km then S85E for 6 km . How far is he from his starting point?
What magnetic bearing is needed to retrace a line for the conditions stated in problems 4.1 through 4.4?
What magnetic bearing is needed to retrace a line for the conditions stated in problems 4.1 through 4.4?
Each respondent in the Current Population Survey of March 1993 was classified as employed, unemployed, or...
Each respondent in the Current Population Survey of March 1993 was classified as employed, unemployed, or outside the labor force. The results for men in California age 35- 44 can be cross-tabulated by marital status, as follows: Married Widowed, Divorced or Separated Employed 679 103 114 Unemployed 63 10 20 Not in labor force 42 18 25 Men of different marital status seem to have different distributions of labor force status. Or is this just chance variation? (you may assume...
Bearing in mind the current state of the global economy, and analysis of Amazon in UAE...
Bearing in mind the current state of the global economy, and analysis of Amazon in UAE as a baseline, research on Indian market using international market research theory. Then, based on secondary research of that market, segment, target and position Amazon  in Indian market to allow the company to grow and sustain competitive advantage.
In the following situations, determine the magnetic induction,magnetic field,magnetization, and bound current inside qnd outside the...
In the following situations, determine the magnetic induction,magnetic field,magnetization, and bound current inside qnd outside the magnetic bodies. a.A magnetic wire with a uniform free current density along its length b. An infinite magnetic slab with a sheet current at its center
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT