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Basically, a magnetised needle on a pivot points towards the magnetic North of the World, based on the attraction of North and South magnets.
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What makes a pendulum swing back and forth?
Gravity makes a pendulum swing back and forth. The object starts at one point, and then moves in a circular motion to the apex of it's next point. The kinetic energy becomes less and less as time goes on if no extra energy is added.
What are the advantages with using a compass?
The compass is important because with out it we would get lost. It helps ships navigate their way to land, and people that get lost in the woods back to their camp. To sum it up a compass helps you find you way, get your bearings, and navigate.
Which characteristic of energy makes it so important to technology?
Energy is ability to do work
How does a standing fan work?
With an electric motor. A force acts on an electric current when it runs through a magnetic field (called the Lorentz Force) see: http://en.wikipedia.org/wiki/Electric_motor
How does a 'compass' work?
A compass is a helpful, easy-to-carry tool. Wherever you are on earth, one end of a compass needle will point to the North Pole. It follows a imaginary line that connects to the magnetic poles of earth. Once you direction is north, you can easily determine south, west, and east. For a compass to work properly, its needle must be light-weight and turn easily. The compass cannot be close to a magnet. Otherwise,the needle will respond to the pull of the magnet rather than to Earth's magnetic field.Another AnswerA compass consists of a lightweight needle (a bar magnet), pivoted, so that it can freely rotate horizontally. The needle aligns itself with the earth's magnetic field, whose direction is from Magnetic South (located in the Antarctic) towards Magnetic North (located in the Arctic). This is because the earth behaves as though there was a large bar magnet, buried deep within the earth, whose north pole is below the Antarctic and whose south pole is below the Arctic (remember, Magnetic North and Magnetic South are locations, not magnetic polarities!).The terms, 'Magnetic North' and 'Magnetic South', are used to distinguish these locations from 'True North' and 'True South'. Once 'Magnetic North' has been established, you can use then determine 'True North' for the purpose of navigation.
Do compass needles pointing to direction considered as contact force?
No, magnetism (the force that makes the needle turn) is a non-contact force.
Does a greater amount of force always result in a greater amount of work?
you have to be using a compass
How do compass' work?
The arrow in a compass is magnetic and is being pulled the magnetic force from the north pole. Hope it helped:) btw, I'm a fifth grader:) :)
Why does a compass needle change direction when it is near a magnetic field?
Because of the magnetic force. The compass needle is also magnetic.Because of the magnetic force. The compass needle is also magnetic.Because of the magnetic force. The compass needle is also magnetic.Because of the magnetic force. The compass needle is also magnetic.
What is done when force makes an object move?
When a force makes an object move, work is done.
Does a compass needle exert force on the earth if the earth exerts a magnetic force on the compass?
Yes !! But its negligible.
What type of force makes a washing machine work?
Centrifugal force.
The force that makes a boat float?
The force that is at work is gravity. If you are thinking of bouyancy, it is not a force.
If Veronica spins in a circle with the compass in her hand which force keeps the compass' needle pointing north?
Magnetic Force
How does a crowbar make work easier?
it makes work easier by changing an input force into a larger output force.
What force makes a pencil eraser work?
friction
What force makes a parachute work?
air resistance
