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Author Topic: HAAARD physics P1 question pleaaase help  (Read 2867 times)

Offline soraam

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HAAARD physics P1 question pleaaase help
« on: May 25, 2010, 06:19:55 pm »
http://www.freeexampapers.com/FreeExamPapers.com_.php?__lo=SUdDU0UvUGh5c2ljcy9DSUUvMjAwNiBKdW4vMDYyNV9zMDZfcXBfMS5wZGY=


question 37

i know why its positive but the second part is kinda unreasonable

the answer is C  ...
but why????????
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Offline abody158

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Re: HAAARD physics P1 question pleaaase help
« Reply #1 on: May 25, 2010, 06:23:20 pm »
anode is always cool ;D
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Offline soraam

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Re: HAAARD physics P1 question pleaaase help
« Reply #2 on: May 25, 2010, 06:24:08 pm »
eeeeeh  ..
why ???
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Offline diva_sparkles

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Re: HAAARD physics P1 question pleaaase help
« Reply #3 on: May 25, 2010, 06:24:15 pm »
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Don’t ask what the world needs. Ask what makes you come alive, and go do it. Because what the world needs is people who have come alive!!

Offline soraam

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Re: HAAARD physics P1 question pleaaase help
« Reply #4 on: May 25, 2010, 06:26:22 pm »
diva sparkels   >>>>>>  its not your time exactly  try saying that after i get the answer

dont take it the bad way but thats stupid i dont wanna read 4553X10^4535 pages
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Offline diva_sparkles

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Re: HAAARD physics P1 question pleaaase help
« Reply #5 on: May 25, 2010, 06:27:25 pm »
Quote from: soraam on May 25, 2010, 06:26:22 pm
diva sparkels   >>>>>>  its not your time exactly  try saying that after i get the answer

dont take it the bad way but thats stupid i dont wanna read 4553X10^4535 pages

GOD!! i told u 2 post ur doubt there not read tht many pgs
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Don’t ask what the world needs. Ask what makes you come alive, and go do it. Because what the world needs is people who have come alive!!

Offline soraam

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Re: HAAARD physics P1 question pleaaase help
« Reply #6 on: May 25, 2010, 06:29:19 pm »
diva >>  forget it !!
i tryed that on chemistry and it was for nothing
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Offline diva_sparkles

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Re: HAAARD physics P1 question pleaaase help
« Reply #7 on: May 25, 2010, 06:32:35 pm »
lol realy but thts 4 chem only pls post on physics

n-ways f9 i'll 4get it

gud luck!!!!!!!!!!!!!!
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Don’t ask what the world needs. Ask what makes you come alive, and go do it. Because what the world needs is people who have come alive!!

Offline soraam

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Re: HAAARD physics P1 question pleaaase help
« Reply #8 on: May 25, 2010, 06:37:43 pm »
lol ok.
now to the main subject  who knows the answer
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Offline Bassiouni

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Re: HAAARD physics P1 question pleaaase help
« Reply #9 on: May 25, 2010, 07:20:02 pm »
Quote from: soraam on May 25, 2010, 06:19:55 pm
http://www.freeexampapers.com/FreeExamPapers.com_.php?__lo=SUdDU0UvUGh5c2ljcy9DSUUvMjAwNiBKdW4vMDYyNV9zMDZfcXBfMS5wZGY=


question 37

i know why its positive but the second part is kinda unreasonable

the answer is C  ...
but why????????

Look m8, Anode is positive and Its Cool , Bec. The Cathode is the one who gets Heated for Thermonic Emission, So the anode is the one with cool temp ;) Bec. it doesnt get heated. Anode only Controls the spoeed of Electrons, The Grids Control the amount of electrons.

Someone plz correct me if im wrong :)
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Offline 5aroofa

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Re: HAAARD physics P1 question pleaaase help
« Reply #10 on: May 25, 2010, 08:52:50 pm »
I agree with Bassiouni. The cathode is the only part that gets heated to increase the average energy of the electrons, so that they spontaneously jump out. There is no need for the anode to be hot :)
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Offline Vin

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Re: HAAARD physics P1 question pleaaase help
« Reply #11 on: May 25, 2010, 09:41:03 pm »

yup .. to complete a circuit ;)
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