By Alan Gladwell
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Hooke's Law Hooke's law of elasticity is an approximation that states that the Force (load) is in direct proportion with the extension of a material as long as this load does not exceed the elastic limit. Materials for which Hooke's law is a useful approximation are known as linearelastic or "Hookean" materials. The relation is often denoted Plastic Region In this region (between points 2 and 3), the rate at which extension is increasing is going up, and the material has passed the elastic limit.
4. What sort of polymer is a rubber on the end of a pencil? 5. What happens to the translucency of an amorphous polymer when it is put under stress? What is a wave? At this point in the course, it is easy to get bogged down in the complex theories and equations surrounding 'waves'. However, a better understanding of waves can be gained by going back to basics, and explaining what on Earth a wave is in the first place. Definitions A wave, at its most basic level, is a disturbance by which energy is transferred because this disturbance is a store, of sorts, of potential energy.
As the temperature rises, the resistance of the thermistor decreases, so the potential difference across it decreases. This means that potential difference across the resistor increases as temperature increases. This is why the voltmeter is across the resistor, not the thermistor. Properties There are three main properties of sensing systems you need to know about: Sensitivity This is the amount of change in voltage output per. unit change in input (the physical property). 3°C: V/°C Resolution This is the smallest change in the physical property detectable by the sensing system.
Advances in Physics by Alan Gladwell