We measure the speed of a moving object by dividing the total distance traveled by the time taken. Speed is calculated using the formula: speed = distance ÷ time, and it is usually expressed in units like meters per second.
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Oscillatory motion is back-and-forth movement around a central position, like a pendulum.
Magnets are made in different shapes to suit various applications, optimizing the magnetic field for specific tasks. Shapes like bars, rings, and horseshoes concentrate magnetic forces, making them effective for diverse practical uses.
To make a magnetic compass, magnetize a needle by rubbing it with a magnet, then float the needle on a small piece of cork or paper in water. It will align itself with Earth’s magnetic field.
Magnets in electric motors create a magnetic field that interacts with the current-carrying coil, producing rotational motion. This interaction between the magnetic field and electric current is fundamental to the motor’s operation.