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To get higher marks, you have to make sure that you have three clear factors to answer the question. For example, if the essay was "‘The political violence of the extreme right caused the biggest ...
Free vibrations involve no transfer of energy between the vibrating object and its surroundings, whereas forced vibrations occur when there's an external driving force and thus transfer of energy between ...
It is a frame of reference in which Newton's first law, which states that objects won't change velocity (accelerate) unless an external force acts upon them, is obeyed.
Simple harmonic motion is an oscillation where both of the following statements are true:
-The acceleration of an object is directly proportional to its displacement from an equili...
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