Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.
Physics education research, electronic materials, and the musings of Christopher Moore, Ph.D.
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1 How many sides does a bubble have?
2 Give an example of an object which is stationary but accelerating
3 Given a single length of resistance wire a fixed contact and a sliding contact how could you make a variable resistor whose resistance varies from zero to a maximum and then back to zero when the sliding contact contact is moved from one end of the wire to the other end?
4 In principle can you make two different volume plasticine cubes
whose sides you can measure exactly?Can you then,using all of the plasticine,mould them together into a single larger cube whose side you can measure exactly?
Last edited by Dadface (2008-12-21 14:05:02)
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connect two fixed contacts together and join them with one potential or ground and use the sliding contact as other end
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if you are talking about a sphere then it has infinite sides
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A bubble has only one side, or infinite sides... depending upon one's perspective and definition of "side".
An object can be "stationary" and accelerating if it is expanding equally in all directions... like as in, say, a bubble being inflated. It's sides are accelerating outwards directionally while the bubble itself remains (nominally) stationary.
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As the definition of side is concerned it is the connection or joint of two planes with a bulging edge.
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Tim Manning
Last edited by Brucehall123 (2011-11-09 11:57:46)
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As the definition of side is concerned it is the connection or joint of two planes with a bulging edge.
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