Qualification > Sciences
Physics Help HERE ONLY !!
QuickSilver:
--- Quote from: annie_angel on June 09, 2009, 06:10:34 am ---wats da usual grade threshold for A in physics paper 1??
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34 to 37 /40
annie_angel:
oh!Thanks!!
IGSTUDENT:
--- Quote from: nid404 on June 09, 2009, 06:08:39 am ---the bar is inside the solenoid..it was moved into the solenoid,causing the field line to be cut. the rest r not correct anyways. For A the magnet is a part of the whole connection(absolutely wrong) for C the magnet is outside the solenoid and being rotated(if it were inside then a pd would be induced as rotating outside does not cut the field line and for D the magnet is being taken away from the solenoid it needs to be taken into it so that field lines can be cut
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Thanks!!!!
examsaresoon:
Can some one please help me out? In Oct/Nov 2007...there are a two questions i don't understand. Question 7 and 21. Help would be appreciate it!
QuickSilver:
--- Quote from: examsaresoon on June 09, 2009, 08:20:56 am ---Can some one please help me out? In Oct/Nov 2007...there are a two questions i don't understand. Question 7 and 21. Help would be appreciate it!
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Question 7.
The mass of the drum is 200 WHEN EMPTY, when full of the spirit, it is 1000kg, so this means that the mass of the spirit is....800kg's
And since density=Mass/Volume, so, Density=800kg/1cm3 which is equal to 800Kg/Cm3
Answer: C
Question 21.
The line should represent the amplitude, because the aomplitude is the line that is in the middle and ANY WAVE THAT RESTS WILL BE ALINE WITH THE AMPLITUDE, Answer:B
Hope I Helped, Dont Forget +REP ;)
Best Wishes
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