Rearranging formula's

  • Thread starter Thread starter Cabdullahi
  • Start date Start date
  • Replies Replies 45
  • Views Views 6K
Status
Not open for further replies.
Abdullahii said:
in the course notes it says 16π2 i think i made a mistake instead of (16.pi)^2 it should be 16.(pi^2)

i calculated Pt correcting the 16 pi squared issue and i got :

pt = 0.12 watts two d.p


and

pr = 0.10 watts to two d.p

which means my antenna has a loss of 0.02 which is absolutely sweet...the antenna looks effecient according to the calculations

cheers nathan for clearing things up!!!!! :D:D:D:D:D:D
Click to expand...
Ah, that's great! :D Generally 16pi^2 always means 16*(pi^2), and it obviously makes a big difference if you square the 16 too!

Glad it all worked out, I'm always happy to help. :)
 
I actually was really curious to know which class this was (as evident by me posting again.)
I'm just starting college so.. this is new to me.
 
Donia said:
I actually was really curious to know which class this was (as evident by me posting again.)
I'm just starting college so.. this is new to me.
Click to expand...

sorry for not answering you earlier...this class is the communications and networking class

its do with antenna's, signal propagation,packet switching,IP,radio

all those things :)

again sorry for not answering you the first time
 
Misz_Muslimah said:
Wow mashallah, how do you understand that?
Click to expand...

Its easy sister...but because my maths is a bit rusty im not as good....i've spent more time playing video games than practising maths


you have an antenna like the one above your house those antennas are powered up so that they can send signals to other antennas and there are various calculations that help with this

its just multiplication and division nothing more

thats it really

.......................................................
 
^ Sounds complicated :phew
..And I thought Simultaneous Equations was hard! Lol
 
Abdullahii said:
sorry for not answering you earlier...this class is the communications and networking class

its do with antenna's, signal propagation,packet switching,IP,radio

all those things :)

again sorry for not answering you the first time
Click to expand...

There is no need to apologize, brother.
Wow.
I thought it was a science or even a math class. You explained it well.. I do hope I don't have to take it for my major though.
 
Donia said:
There is no need to apologize, brother.
Wow.
I thought it was a science or even a math class. You explained it well.. I do hope I don't have to take it for my major though.
Click to expand...

what major are you interested in
 
Abdullahii said:
I just want someone to check if i rearranged this formula correctly



.............Pt.Gt.Gr.lambda^2
Pr =--------------------
............16pi^2 d^2

I made Pt the subject because thats what i want to calculate but im getting weird answers..this is how i rearranged the formula to make Pt the subject


Pr.16pi^2.d^2
-------------------- = pt
Gt.Gr.lambda^2

Where have i gone wrong?
Click to expand...

have you tried using a calculator :><::muslimah:
 
Donia said:
Currently Special Education Teacher insha'ALLAH.
Click to expand...

Mashallah that's very good teaching students with special needs....you've obviously thought about a career where you could teach and get good deeds pile up in the account for the afterlife
 
Abdullahii said:
Yes sister i have used a calculator because its impossible to do a calculation like that without one
Click to expand...

i hated maths in school :raging: my teacher use to roar at me for taking long deep breaths of boredom and not paying attention :'(
 
In my math lessons I used to day dream and wake up when the teacher called my name and jus stare at him while he was asking me the answer to some question. lo
 
squiggle said:
In my math lessons I used to day dream and wake up when the teacher called my name and jus stare at him while he was asking me the answer to some question. lo
Click to expand...

but my teacher use to actually make me cryimsad
 
cat eyes said:
but my teacher use to actually make me cryimsad
Click to expand...

:raging: you should've thrown paper balls when he had his back turned to write on the board ;D

in my school some 1 stole our teachers keys from his desk, and while he was teaching we saw his car drive past the window and he ran out the class room.;D
 
Status
Not open for further replies.

Similar Threads

Back
Top