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Author Topic: paper 1 physics HERE ONLY~!!!!!!!  (Read 12357 times)

Offline shan2391

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #90 on: June 09, 2009, 05:49:50 pm »
Guys i cant get the ans P1 MJ08 Q24 ???
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Offline Seletia

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #91 on: June 09, 2009, 05:52:44 pm »
Quote from: yoyo616 on June 09, 2009, 05:44:00 pm
Quote from: yoyo616 on June 09, 2009, 05:29:55 pm
hello everyone, i need help in May/june 2005 Question 3, it says the answer is C but i think its wrong
speed =   distance /  time
20=  distance / 10
distance = 200
2 is the slop
200/2
= 100m so i think its right

yeah u r rite...i got it....thanks :)
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Offline Igcseboy

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #92 on: June 09, 2009, 06:04:54 pm »
guys a question plzz help

Why are the electric lamps in a house lighting circuit normally connected in parallel?
A The current in every circuit must be the same.
B The lamps are always switched on and off at the same time.
C The voltage across each lamp must be the mains voltage.
D When one of the lamps blows, all the others go out.
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Offline Igcseboy

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #93 on: June 09, 2009, 06:06:31 pm »
When electricity is transmitted over long distances, energy is wasted. How can the wasted
energy be kept as small as possible?
A Keep the current in the transmission lines as large as possible.
B Keep the power supplied to the transmission lines as large as possible.
C Keep the resistance of the transmission lines as large as possible.
D Keep the voltage supplied to the transmission lines as large as possible.


this one also plzz
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nid404

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #94 on: June 09, 2009, 06:27:40 pm »
Quote from: Igcseboy on June 09, 2009, 06:04:54 pm
guys a question plzz help

Why are the electric lamps in a house lighting circuit normally connected in parallel?
A The current in every circuit must be the same.
B The lamps are always switched on and off at the same time.
C The voltage across each lamp must be the mains voltage.
D When one of the lamps blows, all the others go out.

C. The only possible ans
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nid404

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #95 on: June 09, 2009, 06:28:43 pm »
Quote from: Igcseboy on June 09, 2009, 06:06:31 pm
When electricity is transmitted over long distances, energy is wasted. How can the wasted
energy be kept as small as possible?
A Keep the current in the transmission lines as large as possible.
B Keep the power supplied to the transmission lines as large as possible.
C Keep the resistance of the transmission lines as large as possible.
D Keep the voltage supplied to the transmission lines as large as possible.


this one also plzz

D. power loss=I2R...so I and R can't be big. It has to be Voltage
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Offline samin6n

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #96 on: June 09, 2009, 06:34:03 pm »
ON 2003 ques.6,21 and 27...dont get them...explain plss :-\
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Offline Ghost Of Highbury

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #97 on: June 09, 2009, 06:37:45 pm »
ans 6.)  mass of half oil = 1.3 - 0.9 = 0.4
therefore mass of  only full oil in the bottle = 0.4 * 2 = 0.8

therefore mass of only bottle = 1.3 - 0.8 = 0.5
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nid404

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #98 on: June 09, 2009, 06:39:59 pm »
Quote from: samin6n on June 09, 2009, 06:34:03 pm
ON 2003 ques.6,21 and 27...dont get them...explain plss :-\

Q.6- okay theoritically say x is the mass of the bottle

then 1.30+x/2=0.90
x=0.50kg

Q.21-waves travel least in shallow water. So check the distance..A is least

Q.27- This is B cuz the steel ball gets attracted to the magnet
« Last Edit: June 09, 2009, 06:44:48 pm by nid404 »
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Offline Ghost Of Highbury

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #99 on: June 09, 2009, 06:41:35 pm »
21) notice the waves near A
they are different

27.)  i think it shud be B or C

mostly C

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Offline samin6n

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #100 on: June 09, 2009, 06:44:25 pm »
no according to the marking scheme ans. 27 is B...but i still dont get it??
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Offline godfather93

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #101 on: June 09, 2009, 06:45:00 pm »
hmmm.....watermelon! :P
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nid404

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #102 on: June 09, 2009, 06:45:30 pm »
Quote from: samin6n on June 09, 2009, 06:44:25 pm
no according to the marking scheme ans. 27 is B...but i still dont get it??

yes it is B the order is different so I wrote C. It's B...i've corrected it
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Offline Ghost Of Highbury

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #103 on: June 09, 2009, 06:45:46 pm »
correct its B
because as it attracts the path changes..

but  nid says C

how come??
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Offline Ghost Of Highbury

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Re: paper 1 physics HERE ONLY~!!!!!!!
« Reply #104 on: June 09, 2009, 06:46:05 pm »
oh yaa..
just noticed it
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