| Re: Why are SUVs and Christianity similar?
Bill Baka wrote:
>
> My brain is thinking that measuring Joules in terms of power might not
> be correct. I believe the definition of a Joule is a 1 Farad capacitor
> charged to 1 volt, but I can't remember if it is a valid way to measure
> power.
It can be defined a number of ways, all of them equivalent, and the most
convenient choice among the options typically depends on the
application. The bottom line is that it's a measure of energy, like
calories or BTUs, and the way that I used it here is the way "work" is
often defined in physics classes: the amount of energy required to lift
a one netwon weight one meter (or, equivalently, force applied times
distance moved). So in my example, 1N of force applied to a mass over a
distance of 1600m (one mile) equal 1600J of work. Of course, much more
energy than that may be expended in generating that 1N force, but the
amount of work done -- the amount of energy used to move the mass -- is
just 1600J per mile.
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