Magnetism If a substance is attracted to a magnet it is said to be magnetic. A magnetic substance must contain iron, cobalt or nickel. Magnets have two poles. The north seeking pole (N) and the south seeking pole (S). The … Continue reading →
A force is any kind of PUSH or PULL. The unit of force is the newton (N). A force can be measured using an instrument called a force meter (sometimes called a newton meter or spring balance) Using a force … Continue reading →
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