2.7 Powers and roots

There are several symbols for powers and roots: for instance, 24 means ‘2 to the power 4’. An alternative to 24 is 24, where the symbol Author(s): The Open University

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6.2 Natural frequency of free oscillations

Most of us have a fairly accurate understanding of what is meant by resonance – it's what causes a bell to continue to make a sound long after it has been struck. Yet this is just one example of resonance, a phenomenon that occurs in nature in a surprisingly large number of places.

It is all to do with the reversible transfer of energy from one form to another in a system. The common feature associated with mechanical systems that are able to store energy by oscillating is that they h
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Initial French lessons

Authors: 
Ruth De Oliviera