- #1
missyfit
- 5
- 0
Homework Statement
F = A [Q][1][Q][2] / [r][2]
Rearrange make A subject
any one have any ideas?
Rearranging Equation: Make A Subject - Ideas?
- Thread starter missyfit
- Start date
-
- Tags
- Rearrange
Click For Summary
Homework Help Overview
The discussion revolves around rearranging the equation F = A Q1Q2 / r2 to make A the subject. Participants are exploring the manipulation of this equation within the context of algebra and physics.
Discussion Character
- Mathematical reasoning, Problem interpretation, Assumption checking
Approaches and Questions Raised
- Participants discuss moving variables to isolate A and question whether A remains the subject after rearrangement. There are attempts to clarify the equation's structure and the implications of swapping sides and dealing with square roots.
Discussion Status
Some participants have offered guidance on rearranging the equation and encouraged the original poster to share their thoughts on the process. There is an acknowledgment of confusion and stress regarding the manipulation of the equation, with suggestions to revisit the initial steps.
Contextual Notes
The original poster expresses difficulty with the equation and mentions a system they are following, which may not be effective for their understanding. There is a sense of uncertainty about the correct approach to rearranging the equation.
F = A [Q][1][Q][2] / [r][2]
Rearrange make A subject
any one have any ideas?
- #2
tiny-tim
Science Advisor
Homework Helper
- 25,837
- 258
Welcome to PF!
Hi missyfit! Welcome to PF!
(try using the X2 and X2 tags just above the Reply box
)
Do you mean F = A Q1Q2 / r2 ?
Just move the Qs and the r to the other side…
Hi missyfit! Welcome to PF!
(try using the X2 and X2 tags just above the Reply box
)Do you mean F = A Q1Q2 / r2 ?
Just move the Qs and the r to the other side…
what do you get?
- #3
missyfit
- 5
- 0
F = A Q1Q2 / r2 ?
yes this is what was meant thanks
by moving the Qs and r to other side is A the subject if it is left on the right?
yes this is what was meant thanks
by moving the Qs and r to other side is A the subject if it is left on the right?
- #4
- 12,179
- 186
Yes.missyfit said:
- #5
tiny-tim
Science Advisor
Homework Helper
- 25,837
- 258
Or you can always swap the sides round, if it makes you happier.
- #6
missyfit
- 5
- 0
Thanks for both you inputs can you give an example of how you may work this out. do i need to do anything with the sqare root?
missyfit
missyfit
- #7
tiny-tim
Science Advisor
Homework Helper
- 25,837
- 258
No, you show us what you think, and we'll comment.
- #8
missyfit
- 5
- 0
first i thought that swaping side over then wasnt sure what i should do with square root
F = A Q1Q 2 / r2
A Q1Q2 / r2 = F
A Q1Q2 / r2 x Q1Q2 / r2 = F Q1Q2 / r2 x Q1Q2 / r2
A = F Q1Q2 / r2
this all seems abit bulky.
F = A Q1Q 2 / r2
A Q1Q2 / r2 = F
A Q1Q2 / r2 x Q1Q2 / r2 = F Q1Q2 / r2 x Q1Q2 / r2
A = F Q1Q2 / r2
this all seems abit bulky.
- #9
tiny-tim
Science Advisor
Homework Helper
- 25,837
- 258
Hi missyfit!
(just got up :zzz: …)
uhh? whatever are you doing?
(just got up :zzz: …)
missyfit said:
uhh? whatever are you doing?
start again.
- #10
missyfit
- 5
- 0
I guess i made a mess of this just learning equations and already finding it stressful. Dont worry thanks for help any way was following system we have been given to do equation clearly not very effective. 
- #11
tiny-tim
Science Advisor
Homework Helper
- 25,837
- 258
Hi missyfit!
(just got up :zzz: …)
Sorry about the stress.
Start by multiplying both sides of the original equation by r2 …
(just got up :zzz: …)
missyfit said:I guess i made a mess of this just learning equations and already finding it stressful. Dont worry thanks for help any way was following system we have been given to do equation clearly not very effective.
Sorry about the stress.
Start by multiplying both sides of the original equation by r2 …
what do you get?
Similar threads
- · Replies 2 ·
- · Replies 8 ·
- · Replies 13 ·
- · Replies 4 ·
- · Replies 26 ·
- · Replies 5 ·