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3 years ago

If you travel due east or west does your latitude change?

Social Studies

1 answer:

Mumz [18]3 years ago

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Answer:

As long as you travel due east (or west), you will be flying along a line of latitude and you will not cross the equator. Nor is this a great circle. A great circle has its center at the center of the earth.

Great Circle.

Of course, if you start at the north or south pole, you won't be able to travel east or west so the question is undefined at those two points.

Edit: added amplifying information after comments added below.

No matter where you are on the earth, north always points to the north pole, and south always points to the south pole. East and west are perpendicular to those directions. If you point yourself due east and start walking, you will stay at the same latitude.

I think the confusion comes about because really, you cannot walk a straight line on the surface of a sphere. If you want to really travel in a straight line, you would travel off the surface. Think if you had a globe and you thumbtacked one end of a rubber band down on the surface, the only true straight lines will go off the surface. If you lay it along the surface, the rubber band curves along the surface, which is not straight.

So this question is about what if you are moving in what seems like a straight line to you from wherever you are on the earth. Let's try this thought experiment:

Imagine you are one step away from the north pole. Also imagine that there is really short pole at the north pole. You put out your left hand and place it on the pole. You then point yourself due east (which, by the way, is very problematic) and start walking. Your hand will stay on the pole as long as you are traveling east. But you can't walk in a "straight line" and keep your hand on the pole. In fact, it won't be long before you are actually travelling very nearly due south. Then of course you will cross the equator. This actually would be a great circle.

So, you see, it depends on what you mean by a straight line. Do you think lines of latitude are straight lines? Then if you follow that line, you are walking a straight line. Do you think great circle routes are straight lines? Then if you follow one you are walking a straight line. Or if you think the only solution is the true straight line which will take you off the planet then you will not cross the equator (not counting for the earth revolving around the sun and moving underneath you after you start).

This amplifies my original answer a lot, so I will add it to my answer.

Explanation:

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3 years ago

A sometimes-ally of the United States requests U.S. Support in maintaining stability during an insurgent uprising. The U.S. Agre

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Answer: To answer this I shall list the 12 Principles of Joint Operations, briefly explain them and state their relevance to the above scenario.

Explanation:

OBJECTIVE

Military action should be directed against a clearly defined objective.

This is LEAST relevant here because the goal is to maintain the peace in the country and so more detailed objectives are not really needed.

MASS

This is the mobilisation and synchronization of combat power to strike a specific place at a specific time thereby achieving results. It is LEAST RELEVANT here as the mission is to maintain stability instead of striking at an enemy.

OFFENSIVE

Striking fast and hard to achieve the results needed instead of maintaining defensive action. This is LEAST RELEVANT here as the mission is to maintain the peace as opposed to striking.

SURPRISE

Striking at a time and place where the enemy will be least prepared for a strike. It can end conflicts quickly. it is LEAST RELEVANT here because the Joint force is maintaining the peace and as such there is no need for a surprise attack.

MANEUVER

This is the movement of combat power to gain strategic and positional advantage. It is LEAST RELEVANT here because peace keepers have to keep the peace by sometimes even placing their selves in vulnerable positions. They therefore cannot exploit maneuverability.

SIMPLICITY

This is the preparation of uncomplicated plans to ensure a speedy end to conflict because participating forces are clear on what needs to be done. It is LEAST RELEVANT here because the Joint force is involved in an insurgency and Insugences generally have no simple way of ending. They can be very complicated.

RESTRAINT

Here the goal is to prevent unnecessary use of force and by extension collateral damage. It is MOST RELEVANT here because unnecessary use of force could only serve to escalate the already deteriorating situation.

PERSEVERANCE

This principle states that forces should be able to be patient to see the conflict to the end. It is MOST RELEVANT here because as this is an insurgency, it requires a lot of patience because insurgencies are known to take time due to the irregular tactics of the insurgents.

LEGITIMATECY

Actions during war must be legal and moral. It is therefore MOST RELEVANT here because not unlike RESTRAINT, immoral and illegal actions will escalate the situation.

SECURITY

Measures must be taken to protect personnel from the enemy by reducing vulnerablities. With the insurgent use of irregular warfare tactics to exert their influence, including the use of Improvised Explosive Devices (IEDs) and ambushes on peace-keeping forces, Security is MOST RELEVANT and measures should be taken to protect the Joint force.

ECONOMY OF FORCE

This principle posits that all personnel should be deployed in an effective way so that no division has no purpose. It is MOST RELEVANT here because Peace Keeping missions require very delicate handling and the most efficiency.

UNITY OF COMMAND

The forces involved must be united for a single purpose so as to achieve that purpose. Seeing as the Peace Keeping force is multinational, this principle is MOST RELEVANT because a way needs to be found to unite these different people into an effective unit with one goal and purpose.

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3 years ago