Science

bvf

(6,604 posts)

10. Units of measurement have nothing to do with anything here,

Wed Jul 6, 2016, 10:28 PM

Jul 2016

Last edited Sun Jul 10, 2016, 08:47 PM - Edit history (2)

but an intro to dimensional analysis might be helpful to you.

How fast do your fingernails grow in miles per hour?

Hint: there's an answer, just as there's an answer to the question of how fast you might be driving in furlongs/fortnight.

ETA:

I guess what I'm saying here is that units of measurement are NOT variables.

You can measure your height in centimeters, feet, inches, or what have you. Your confusion seems to stem from thinking that it can be measured in anything but units of length, and your question takes on the quality of that of someone wondering how old s/he is in foot-pounds.

Relieved to see zero recs here.

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Ok brainiacs...someone help me... [View all] clarice Jul 2016 OP

This is a good explainer sharp_stick Jul 2016 #1

I don't think a steel ball at rest contains any energy. annavictorious Jul 2016 #2

E (9 X 10**16 joules per kg * 0.453592 lbs per kg) = m (.453952 kg) * ... Jim__ Jul 2016 #4

That makes MUCH more sense. Thanks Anna. nt clarice Jul 2016 #9

The title of Einstein's paper helps. longship Jul 2016 #3

Klein-Gordon forever! DetlefK Jul 2016 #6

Well, as I wrote, the simple equation is for a body at rest. longship Jul 2016 #7

Some examples: DetlefK Jul 2016 #5

Thanks to everyone...much clearer. nt clarice Jul 2016 #8

Units of measurement have nothing to do with anything here, bvf Jul 2016 #10