HOMEWORK-.-

i have to reasearch magnetism, so i need to know what the following mean,BY THE WAY, sorry it's long; -drag -water+air resistance -non'contact force -electro magnet -north-seeking pole thanks guys:)

Answers
here's a good youtube video on magnetic drag http://www.youtube.com/watch?v=b4XNF6hzHec
chloe
31 March 2011
An electromagnet is a type of magnet whose magnetic field is produced by the flow of electric current. The magnetic field disappears when the current ceases. Electromagnets are very widely used as components of other electrical devices, such as motors, generators, relays, loudspeakers, hard disks, MRI machines, scientific instruments, and magnetic separation equipment, as well as being employed as industrial lifting electromagnets for picking up and moving heavy iron objects like scrap iron.
chloe
31 March 2011
Objects moving through the air experience a type of friction called AIR RESISTANCE Air resistance means that some falling objects can reach a constant speed before they hit the ground It is caused by air particles hitting moving objects and reducing their speed.
chloe
31 March 2011
Similarly water resistance is the force that pushes against a moving object as it passes through water, slowing it down
chloe
31 March 2011
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