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Quote: from AtomicCactus at 12:48 am on April 4, 2007

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Being electrocuted is more dependent on amperage than voltage (potential difference).

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Very true, but you have to have enough voltage to overcome skin resistance. If probes are placed INSIDE the body- a very small voltage can kill- the voltage used by heart pace makers is in the millivolt range, but if pulsed at the wrong time could kill by causing fibrillation or heart block. But when applied on the outside you must first have enough voltage to overcome skin resistance- which can be several thousand ohms if the skin is dry- then a sufficiently low souce impedance to delivering enough current. You can generate thousands of volts by rubbing a piece of fur on a balloon but the current is infinitesimal- a few microamps maybe. Conversely, a car battery can deliver several hundred amps, but only if the resistance is very low- less than a ohm so you can touch a 12V car battery and not feel a thing. It's when you have both high voltage and current that it's dangerous- especially if it's AC.
 

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....but batteries are expensive.  Hair dryers will get the job done quicker.  

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Maybe you could do the job dropping in A THOUSAND batteries [bwah ha ha]!!!  

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Actually no, the batteries would have to be connected in series for the voltages to add up to a dangerous level.  Merely having them sitting separately won't do it.

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 ~ Anyone who is not confused doesn't understand the situation ~

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Is it possible for velocity to instantaneously change from, say, 10 m/s to 0 m/s or from 10 m/s to -10 m/s?  

I would think that if, say, you throw a ball against a wall and it ricochets back, the velocity isn't changing instantaneously, just very quickly.  But if you shine a flashlight at a mirror and the light reflects back, is the velocity changing instantaneously or just very quickly?  

I'm not trying to be a smart ass asking the question, I'm really wondering and I can't quite get my mind around it.  

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Light reflects instantaneously. Intelligent question.

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