« previous next »
Pages: 1 ... 134 135 [136] 137 138 ... 160   Go Down

Author Topic: ALL PHYSICS DOUBTS - POST HERE !!  (Read 197588 times)

holtadit

  • Guest
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2025 on: May 26, 2010, 04:20:51 pm »
Quote from: ang3l on May 26, 2010, 04:20:23 pm
Q: Describe how the energy from the sun becomes stored energy in water behind a dam.[3]

Thx

Look at the MS.

Seriously.  ;)
Logged

Offline Vin

  • SF V.I.P
  • ********
  • Posts: 7914
  • Reputation: 52609
  • Gender: Male
    • Theory of Life - A new skew.
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2026 on: May 26, 2010, 04:22:32 pm »
Quote from: Kimo Jesus on May 26, 2010, 04:11:19 pm
AAADII..EHM ( i need u to imagine over here )

look if there is a ciruit with a resisor in series and after the resistor comes two PARALEL resistors .

Is it true that if the series resistor has a higher resistance that both the parallel , the current goes thro sreies resitor first?


because the voltge has to be used up in teh series resistor so that we could calculate the voltage around the parallel ones?

LMAO !! XD .. a resisor in series ??
Logged

Offline MasterMath

  • SF Citizen
  • ***
  • Posts: 233
  • Reputation: 329
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2027 on: May 26, 2010, 04:22:56 pm »
Quote from: ang3l on May 26, 2010, 04:20:23 pm
Q: Describe how the energy from the sun becomes stored energy in water behind a dam.[3]

Thx
Energy from the sun (moved to earth by radiation) increases the temperature of water .. Thus making it evaporate to gas which increases its G.P.E then the vapor falls as rain which can be used in dams to move turbines etc.
Logged

Offline Malak

  • Honorary Member
  • SF Farseer
  • *****
  • Posts: 4454
  • Reputation: 65534
  • A warm smile is the universal language of kindness
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2028 on: May 26, 2010, 04:26:05 pm »
Quote from: ~VIN1094~ on May 26, 2010, 04:22:32 pm
LMAO !! XD .. a resisor in series ??
I guess..this is wat it means maybe ?
Logged
If you are a man who degrades women then allow me to respectfully remind you that you came from ONE

Reminder to myself: Stop worrying and start working

SF magazine 2012 - Download here

Offline WARRIOR

  • SF Master
  • ******
  • Posts: 1473
  • Reputation: 51196
  • Egyptian And so damn proud . I love you jesus!
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2029 on: May 26, 2010, 04:26:50 pm »
look. ( spaces are resistors )

In order to find the voltages accros the parallel resistors. u have to subtbract the voltage being used up  in the series and the voltage is then given to teh 2 parallel resistors

well what if the resistance of the series resistor is higher than total resistance of parallel ristors?

does the current flow thro the parallel first then?
Logged
NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

Offline thenewkid™

  • legendary
  • SF Geek
  • ****
  • Posts: 535
  • Reputation: 35181
  • Gender: Male
  • ^funny baby =P
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2030 on: May 26, 2010, 04:30:45 pm »
Quote from: MasterMath on May 26, 2010, 04:22:56 pm
Energy from the sun (moved to earth by radiation) increases the temperature of water .. Thus making it evaporate to gas which increases its G.P.E then the vapor falls as rain which can be used in dams to move turbines etc.
r u sure???
Logged
<3 freekicks <3
<3 football <3
<3 lamborghini <3

Offline Ghost Of Highbury

  • O_o_O lala!
  • SF Farseer
  • *******
  • Posts: 4096
  • Reputation: 41428
  • Gender: Male
  • Namaskaram!
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2031 on: May 26, 2010, 04:32:36 pm »
Quote from: Kimo Jesus on May 26, 2010, 04:26:50 pm
look. ( spaces are resistors )

In order to find the voltages accros the parallel resistors. u have to subtbract the voltage being used up  in the series and the voltage is then given to teh 2 parallel resistors

well what if the resistance of the series resistor is higher than total resistance of parallel ristors?

does the current flow thro the parallel first then?

ok suppose V = 10V

Series Resistor = 3ohms

Each parallel Resistor = 2ohms

thus, combined parallel resistance = 1 ohm.

so the parallel resistors get , 1/4*10 = 2.5Volts and the series resistor gets = 7.5Volts
Logged
divine intervention!

Offline Adzel

  • SF Citizen
  • ***
  • Posts: 230
  • Reputation: 272
  • ALLAH IS THE GREATEST
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2032 on: May 26, 2010, 04:34:36 pm »
Quote from: M'i'D'o on May 26, 2010, 03:49:39 pm
hey everybody there is a question in paper 1 physics i was solving yesterday while studying...
a steel bar is hanged near an electromagnet....
A ( attract  attract )
B ( attract  repel   )
C  ( repel attract )
D ( repel repel )

Guys....don't you think that this question is familiar....
Logged

Offline Ivo

  • SF Geek
  • ****
  • Posts: 515
  • Reputation: 2767
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2033 on: May 26, 2010, 04:35:26 pm »
Quote from: Adzel on May 26, 2010, 04:34:36 pm
Guys....don't you think that this question is familiar....

To what?  Can someone confirm whether the answer to that question is B?
Logged
Always willing to help!  8)
"In helping others, we shall help ourselves, for whatever good we give out completes the circle and comes back to us."

Offline Adzel

  • SF Citizen
  • ***
  • Posts: 230
  • Reputation: 272
  • ALLAH IS THE GREATEST
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2034 on: May 26, 2010, 04:37:54 pm »
Logged

holtadit

  • Guest
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2035 on: May 26, 2010, 04:39:21 pm »
Logged

Offline thenewkid™

  • legendary
  • SF Geek
  • ****
  • Posts: 535
  • Reputation: 35181
  • Gender: Male
  • ^funny baby =P
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2036 on: May 26, 2010, 04:39:40 pm »
Quote from: Adzel on May 26, 2010, 04:34:36 pm
Guys....don't you think that this question is familiar....

somthin i ws doing some hrs ago
right
Logged
<3 freekicks <3
<3 football <3
<3 lamborghini <3

Offline Ivo

  • SF Geek
  • ****
  • Posts: 515
  • Reputation: 2767
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2037 on: May 26, 2010, 04:40:36 pm »
Quote from: M'i'D'o on May 26, 2010, 03:49:39 pm
hey everybody there is a question in paper 1 physics i was solving yesterday while studying...
a steel bar is hanged near an electromagnet....
A ( attract  attract )
B ( attract  repel   )
C  ( repel attract )
D ( repel repel )

So is the answer B?
Logged
Always willing to help!  8)
"In helping others, we shall help ourselves, for whatever good we give out completes the circle and comes back to us."

Offline WARRIOR

  • SF Master
  • ******
  • Posts: 1473
  • Reputation: 51196
  • Egyptian And so damn proud . I love you jesus!
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2038 on: May 26, 2010, 04:40:59 pm »
Quote from: A@di on May 26, 2010, 04:32:36 pm
ok suppose V = 10V

Series Resistor = 3ohms

Each parallel Resistor = 2ohms

thus, combined parallel resistance = 1 ohm.

so the parallel resistors get , 1/4*10 = 2.5Volts and the series resistor gets = 7.5Volts
i seee
i had this weird thing in my mind...hmmm
cool thx
Logged
NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

Offline MasterMath

  • SF Citizen
  • ***
  • Posts: 233
  • Reputation: 329
Re: ALL PHYSICS DOUBTS - POST HERE !!
« Reply #2039 on: May 26, 2010, 04:42:14 pm »
lol @ everyones silence.. no1 wants to really say where they remember this from although im sure everyone of you where that question was :D
Logged
Pages: 1 ... 134 135 [136] 137 138 ... 160   Go Up
« previous next »