Tdonaly wrote:
Is the rate of doing work zero at all instances of time? Nope.
Power is the time rate of change for doing work. It's supposed to be
important to know the formula for finding the instantaneous
rate of doing work so you can ultimately find the average
rate. Maybe you think this is unimportant. I wonder why
textbook authors think it is?

Point is, one cannot have a time rate of change without a changing
time. Zero time is not changing. An electron cannot even wiggle in
zero time.
--
73, Cecil http://www.qsl.net/w5dxp



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