« previous next »
Pages: 1 ... 40 41 [42] 43 44 ... 58   Go Down

Author Topic: Physics Help HERE ONLY !!  (Read 80891 times)

Offline Eamyzz

  • SF Senior Citizen
  • *****
  • Posts: 845
  • Reputation: 217
  • Gender: Female
  • No star can shine with a brocken heart =)
Re: Physics Help HERE ONLY !!
« Reply #615 on: June 03, 2009, 06:51:25 pm »
wat is da difference By the way motors and generators and da uses simply evrythng ?
PLEASE REPLY FAST  ;D
Logged
Live=Hope
Hope=Life
Life=Love
So,No life=No hope=DEATH
am alive =D

Offline devileye

  • SF Immigrant
  • **
  • Posts: 52
  • Reputation: 12
  • Gender: Male
  • bio rulz so do i !!!
Re: Physics Help HERE ONLY !!
« Reply #616 on: June 03, 2009, 06:55:23 pm »
By the way those are brushes which connect to the circuit but in another way it's medium of connection which is joint to both brushes and coil...and it's function is to rotate with the coil...as when the coil in vertical it's doesn't have enough force to turn...the commutator overshoots the vertical and changes the direction of the current through it..making it turn.....commutators are mainly in dc motors ...in ac generators they don much as ac requires a shaft to turn the coil..not any source such as battery to be specific steam is used in power stations...
Logged
ur appetence makes me sik!!!!! live with sanity and die with dignity!!

Offline Kim

  • here comes trouble!=D
  • SF V.I.P
  • ********
  • Posts: 9835
  • Reputation: 36270
  • Gender: Female
Re: Physics Help HERE ONLY !!
« Reply #617 on: June 03, 2009, 06:56:20 pm »
Quote from: Eamyzz on June 03, 2009, 06:51:25 pm
wat is da difference By the way motors and generators and da uses simply evrythng ?
PLEASE REPLY FAST  ;D
dc motor
supplied with dc current
changes electrical to motion energy
the outside circuit is connected to a battery switch or rheostat
its brushes touch two halves of a commutator

Ac motor
supplied with ac current
changes motion to electrical
outside circuit is connected to lamp or voltmeter
its brushes touch 2 separate split rings
Logged
After all is said and done, more is said than done.

By the time a man realizes that maybe his father was right, he usually has a son who thinks he’s wrong.

The early bird may get the worm, but the second mouse gets the cheese.

Offline goin4dakill

  • SF Citizen
  • ***
  • Posts: 157
  • Reputation: 5
Re: Physics Help HERE ONLY !!
« Reply #618 on: June 03, 2009, 06:58:20 pm »
Quote from: goin4dakill on June 03, 2009, 06:42:36 pm
Heyyy Guys!
Okay, i have some very important advice- thats a secret. So dont tell anyone!!!!!!!!!!! ha. Plus points there..hahah
DESPITE THE FACT THAT I AM NOT TELLING A STUDENT FORUM FULL OF THOUSANDS OF PEOPLE!

ANyway, So for the paper 6..the night before I did a past paper 2006 june. The first three questions in teh 2009 paper, were exactly the same. And i mean EEEZACTLY.
So, according to my calculations (inhaler, push glasses up nose, haha dork attack) umm, they might base paper 3 from June 2006 as well.

If you have an inhaler- umm I was kiddinggggg - i love people with inhalers :D <3  


Just so everyone gets to seeee
Logged

Offline Kim

  • here comes trouble!=D
  • SF V.I.P
  • ********
  • Posts: 9835
  • Reputation: 36270
  • Gender: Female
Re: Physics Help HERE ONLY !!
« Reply #619 on: June 03, 2009, 07:01:36 pm »
ok ppl i have to go now
so best of luck to all of you :D bye
Logged
After all is said and done, more is said than done.

By the time a man realizes that maybe his father was right, he usually has a son who thinks he’s wrong.

The early bird may get the worm, but the second mouse gets the cheese.

Offline esso

  • SF Citizen
  • ***
  • Posts: 147
  • Reputation: 25
Re: Physics Help HERE ONLY !!
« Reply #620 on: June 03, 2009, 07:05:00 pm »
whats the correct definition of HALF LIFE ??
Logged

Offline Ghost Of Highbury

  • O_o_O lala!
  • SF Farseer
  • *******
  • Posts: 4096
  • Reputation: 41428
  • Gender: Male
  • Namaskaram!
Re: Physics Help HERE ONLY !!
« Reply #621 on: June 03, 2009, 07:07:00 pm »
The half-life of a radioactive substance  is the interval required for the quantity to decay to half of its initial value
Logged
divine intervention!

Offline sweetie

  • SF Citizen
  • ***
  • Posts: 286
  • Reputation: 258
  • Gender: Female
Re: Physics Help HERE ONLY !!
« Reply #622 on: June 03, 2009, 07:19:51 pm »
wat is da constant in
       
resistance= constant x length/ cross- sectional area

plzzzzz reply quick
thanx
Logged

Offline MaNa

  • SF Overlord
  • *********
  • Posts: 10219
  • Reputation: 15789
  • Gender: Female
  • InV!ncIbl3!!!!!!
Re: Physics Help HERE ONLY !!
« Reply #623 on: June 03, 2009, 07:20:22 pm »
GUys can anyoone tell me how much u needa get in paper 3 to get an A*
Logged
All ur dreams are made,when you're changed to a mirror and the razor blade!!!

Offline AS girl

  • SF Master
  • ******
  • Posts: 1589
  • Reputation: 13769
  • Gender: Female
Re: Physics Help HERE ONLY !!
« Reply #624 on: June 03, 2009, 07:21:48 pm »
Quote from: ManaH on June 03, 2009, 07:20:22 pm
GUys can anyoone tell me how much u needa get in paper 3 to get an A*

It depends on the curve!! If the curve is low this year (hope so) u can get an A* with no effort!
Logged
If i fall along the way pick me up and dust me off...and if i get too tired to make it..be my breath so i can walk!!

Offline Eamyzz

  • SF Senior Citizen
  • *****
  • Posts: 845
  • Reputation: 217
  • Gender: Female
  • No star can shine with a brocken heart =)
Re: Physics Help HERE ONLY !!
« Reply #625 on: June 03, 2009, 07:22:27 pm »
Quote from: kim on June 03, 2009, 06:56:20 pm
Quote from: Eamyzz on June 03, 2009, 06:51:25 pm
wat is da difference By the way motors and generators and da uses simply evrythng ?
PLEASE REPLY FAST  ;D
dc motor
supplied with dc current
changes electrical to motion energy
the outside circuit is connected to a battery switch or rheostat
its brushes touch two halves of a commutator

Ac motor
supplied with ac current
changes motion to electrical
outside circuit is connected to lamp or voltmeter
its brushes touch 2 separate split rings



thank u u r an angel u deserve a +rep ;)
Logged
Live=Hope
Hope=Life
Life=Love
So,No life=No hope=DEATH
am alive =D

Offline MaNa

  • SF Overlord
  • *********
  • Posts: 10219
  • Reputation: 15789
  • Gender: Female
  • InV!ncIbl3!!!!!!
Re: Physics Help HERE ONLY !!
« Reply #626 on: June 03, 2009, 07:23:48 pm »
Quote from: IG girl on June 03, 2009, 07:21:48 pm
Quote from: ManaH on June 03, 2009, 07:20:22 pm
GUys can anyoone tell me how much u needa get in paper 3 to get an A*

It depends on the curve!! If the curve is low this year (hope so) u can get an A* with no effort!
i mean like average
Logged
All ur dreams are made,when you're changed to a mirror and the razor blade!!!

Offline Eamyzz

  • SF Senior Citizen
  • *****
  • Posts: 845
  • Reputation: 217
  • Gender: Female
  • No star can shine with a brocken heart =)
Re: Physics Help HERE ONLY !!
« Reply #627 on: June 03, 2009, 07:25:14 pm »
manah and Ig grl i love ur pictures...they r so WOOOOOW  :o  ;)
Logged
Live=Hope
Hope=Life
Life=Love
So,No life=No hope=DEATH
am alive =D

Offline MaNa

  • SF Overlord
  • *********
  • Posts: 10219
  • Reputation: 15789
  • Gender: Female
  • InV!ncIbl3!!!!!!
Re: Physics Help HERE ONLY !!
« Reply #628 on: June 03, 2009, 07:25:48 pm »
Quote from: Eamyzz on June 03, 2009, 07:25:14 pm
manah and Ig grl i love ur pictures...they r so WOOOOOW  :o  ;)
thankyou :)
Logged
All ur dreams are made,when you're changed to a mirror and the razor blade!!!

Offline care

  • SF Immigrant
  • **
  • Posts: 53
  • Reputation: 6
  • Gender: Male
Re: Physics Help HERE ONLY !!
« Reply #629 on: June 03, 2009, 07:26:02 pm »
can someone explain me the difference between virtual and real image?
Logged
Pages: 1 ... 40 41 [42] 43 44 ... 58   Go Up
« previous next »