Qualification > Sciences
ALL CIE PHYSICS DOUBTS HERE !!!
TJ-56:
--- Quote from: $!$RatJumper$!$ on November 14, 2010, 10:16:09 am ---W07 Q 3, 6, 16, 22, 25, 37 :) thank you
--- End quote ---
3
X remains at the same direction, but since they asked for X-Y, Y is now at the opposite direction,
The resultant is Z. X goes diagonally right-upwards, and Y now goes horizontally to the left, so Z would be upwards, and hence b is the correct answer.
6
When u look at the meter, as the current increases, the deflection decreases, and so the gradient decrease with increasing current, so its either A or C
When the current is zero, there is a deflection X as stated on the question, so when the current is 0, there must be an intersection at the y axis and so A is the answer.
16
At position 3, the person is not moving (or moving very slowly) , unlike position 2, where he has kinetic energy moving downwards, stretching the rope. Moreover, at 3, the rope stores maximum elastic energy, since its stretched the most. so C
22
Radio waves have frequencies 10^3 to 10^9, i have uploaded previously a document comprising these, and if u cant find it i have no problem uploading it again.
Hope that helped,
$!$RatJumper$!$:
--- Quote from: TJ-56 on November 14, 2010, 10:43:37 am ---3
X remains at the same direction, but since they asked for X-Y, Y is now at the opposite direction,
The resultant is Z. X goes diagonally right-upwards, and Y now goes horizontally to the left, so Z would be upwards, and hence b is the correct answer.
6
When u look at the meter, as the current increases, the deflection decreases, and so the gradient decrease with increasing current, so its either A or C
When the current is zero, there is a deflection X as stated on the question, so when the current is 0, there must be an intersection at the y axis and so C is the answer.
16
At position 3, the person is not moving (or moving very slowly) , unlike position 2, where he has kinetic energy moving downwards, stretching the rope. Moreover, at 3, the rope stores maximum elastic energy, since its stretched the most. so C
22
Radio waves have frequencies 10^3 to 10^9, i have uploaded previously a document comprising these, and if u cant find it i have no problem uploading it again.
Hope that helped,
--- End quote ---
Thank you it would be gr8 if you could upload it again :)
And for question 6 the answer is actually A :(
Dania:
Why is the answer D?
TJ-56:
--- Quote from: Dania on November 14, 2010, 10:58:01 am ---Why is the answer D?
--- End quote ---
21
Since the total pressure is 17.5 MPa:
17*10^6 = Pressure exerted by oil +Pressure exerted by water
= 830*9.81*x + 1000*9.81*(2000-x)
Solving for x would give 1270m
And hence the answer is D
TJ-56:
--- Quote from: $!$RatJumper$!$ on November 14, 2010, 10:53:13 am ---Thank you it would be gr8 if you could upload it again :)
And for question 6 the answer is actually A :(
--- End quote ---
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version