By P P Dendy; Robert Tuffnell; C H B Mee; University of Cambridge. Local Examinations Syndicate
A publication of questions, with labored ideas, from A-level, 6th shape access (Cambridge) and S-level papers
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Additional resources for Cambridge problems in physics and advice on solutions
Aristotle had stated that heavy objects would fall faster than lighter objects. Galileo disagreed and held the opposite view that, except for air resistance, the two objects would fall at the same time regardless of their masses. It is not certain whether he personally performed the legendary musket ball versus cannonball drop experiment from the Leaning Tower of Pisa to prove this point. He did, however, conduct a sufficient number of experiments with objects rolling or sliding down inclined planes to upset Aristotelian thinking and create the science of mechanics.
By analogy, imagine a grain of very fine sand becoming the size of the presently observable universe in one-billionth (10−9) the time it takes light to cross the nucleus of an atom. During inflation, space itself expanded so rapidly that the distances between points in space increased greater than the speed of light. Scientists suggest that the slight irregularities they now observe in the CMB are evidence (the fossil remnants or faint ghosts) of the quantum fluctuations that occurred as the early universe inflated.
Aristotle suggested that objects made of these four basic elements are subject to change and move in straight lines. Aristotle coined the term energia (ενεργια) to describe the motion or activity of matter. He developed this new word from the Greek words: energos (ενεργος), meaning active, and ergon (εργον), meaning work. For Aristotle, energia was intimately connected to the metaphysical notion of a potentiality transforming into an actuality. While energy traces its linguistic origin to Aristotle’s energia, the modern scientific interpretation of this word did not appear until the early 19th century.
Cambridge problems in physics and advice on solutions by P P Dendy; Robert Tuffnell; C H B Mee; University of Cambridge. Local Examinations Syndicate