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author=Slow link=board=physics;num=1089331788;start=0#0 date=07/08/04 at 17:09:48]1)Why you cannot always add two numbers that have the same dimensions? Example?
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huh what? This is what we call a badly written question.
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2)Is it possible for two quantities to have the same dimensions but different units?
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I suppose what they mean is:
Is three meters equal to three feet? Or something like that.
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3) Is it possible for two quantities to have the same units but different dimensions?
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Huh what? Who writes these things? How do they define "dimensions" and "units"? These terms are openly ambiguous.
I suppose they are asking:
Can you have something that is five feet and something that is three feet?
Well, yes....
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4) Considering the fact that 3.28 ft=1m, which is the larger unit for measuring area, 1 ft2 or 1m2?
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Finally something a bit more clear. Since a square foot is one foot*one foot and a square meter is one meter*one meter, and a meter is longer than a foot, than a square meter is larger than a square foot.
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5)Consider a 1330-ft2 apartment.With your answer to part (a) in mind and without doing any calculations, decide whether this apartment has an area that is greater or less than 1,330 m2.
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Yeah, well, since a square foot is smaller than a square meter, then 1330 square feet is less than 1330 square meters....
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6)In a 1,330-ft2, how many square meters of area are there?Does this support in part 4 adn 5?
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Number crunching time. (sqrt(1330)/(3.28))^2
Best of luck,
~psi42
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