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Common sensible definitions & equations

Common sensible definitions & equations - Physics Forum

Common sensible definitions & equations - Physics Forum. Discuss and ask physics questions, kinematics and other physics problems.


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  #21  
Old 09-09-2005, 07:16 PM
odin
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Default Common sensible definitions & equations

> Any fool knows that a term consists of one or more independent

Nope. Two or more variables in parentheses do not need to be kept together.
Read a grade 6 math book and see for yourself. And the following is true:

1/(x/y) = y/x

If you don't agree with the above grade 6 algebra, then you are the fool.




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  #22  
Old 09-10-2005, 11:50 AM
Don1
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Default Common sensible definitions & equations

odin wrote:

Perhaps I said that wrong. According to my book: "Parenthesis ( ) or
brackets [ ] mean that quantities are to be grouped together, and that
quantities enclosed by them are to be considered as one quantity. The
line of a fraction / has the same significance in this respect as a
pair of parentheses."
Yes, and x=(x/y)y too.

Using x and y are too abstract, for me anyways, except for horizontal,
and vertical spacial coordinates.

Don

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  #23  
Old 09-10-2005, 11:48 PM
ghytrfvbnmju7654@mail.com
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Default Common sensible definitions & equations

Don1 wrote:

Who knows what the axioms of Don's logic are except Don?

Let's go over the logic again.

You have told us that f=(f/a)a and m=w/g=f/a are true statements.
Agreed?

The statement m=w/g=f/a means, m=w/g and w/g=f/a. Agreed?

If m=w/g and w/g=f/a, then m=f/a. Agreed?

Putting parentheses around an expression doesn't change its value, so
f/a=(f/a). Agreed?

If m=f/a and f/a=(f/a), then m=(f/a). Agreed?

If m=(f/a), then (f/a)=m. Agreed?

Since the statement f=(f/a)a is true about (f/a), and (f/a)=m, then it
is also true about m. Thus, f=ma is a true statement. Agreed?

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  #24  
Old 09-11-2005, 01:30 PM
Don1
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Default Common sensible definitions & equations

[Only registered users see links. ] wrote:

Toldja once: f=ma, _only_ if m = f/a is treated as (f/a): Where the
symbol / has the same significance as a pair of parentheses.

Now quit the dam tomfoolery.

Don

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  #25  
Old 09-11-2005, 08:27 PM
ghytrfvbnmju7654@mail.com
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Default Common sensible definitions & equations


Don1 wrote:

Don, a pair of parentheses means that when the expression is evaluated,
the operations inside the parentheses are performed before the
operations outside the parentheses. Since in the statement m=(f/a),
the entire right-hand side is in parentheses, the presence of the
parentheses can have no effect at all on the meaning of the statement.
There is absolutely no difference between m=f/a and m=(f/a).

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  #26  
Old 09-11-2005, 09:58 PM
Don1
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Default Common sensible definitions & equations

[Only registered users see links. ] wrote:

Right! Because according to my book; in that sense, the symbol / has
the same significance as a pair of parentheses, so that m=f/a, and the
multiplication and division must be done before the f is transposed; so
that f=(f/a)a=ma.

Don

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  #27  
Old 09-11-2005, 10:22 PM
odin
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Default Common sensible definitions & equations

>> Don, a pair of parentheses means that when the expression is evaluated,

Nope. The symbol / does not have the same meaning as parentheses. According
to my book you are an idiot. What book are you reading Don1?



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  #28  
Old 09-12-2005, 12:28 AM
Don1
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Default Common sensible definitions & equations

odin wrote:

A better one than you are. At least my book doesn't call people idiots.

Don

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