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AS Physics P1 MCQs Preparation Thread.
electric fields always travel from + to - so speed will decrease as it electron is attracted to + not negative path is linear because it is travellin parallel to electric field not perpendicular to cause parabolic motion- bloody_mary
- Post #802
- Forum: A-Levels
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A song describing ur mood today??
- bloody_mary
- Post #4
- Forum: Chat
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AS Physics P1 MCQs Preparation Thread.
can someone please help me with questions: 15 26 28 30 31 http://www.xtremepapers.com/papers/CIE/Cambridge%20International%20A%20and%20AS%20Level/Physics%20(9702)/9702_w11_qp_12.pdf...- bloody_mary
- Post #798
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
Q10 well first right what we will now so X: 0.5mv^2=E and Y: has 0.5*2m*l^2 (l is the speed because it can't be same as X has) since it is an explosion they both have same KE so will try to find l for Y so l= sqrt(E/m) v= sqrt(2E/m) now divide l by v so we get l is sqrt(0.5)*v no...- bloody_mary
- Post #796
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
Q6 this question is about circular motion ie centripetal force and when an object is in circular motion it is speed is constant unlike velocity as direction always changes and so does accn so answer is C Q13 whenever an object is in equlibrium its triangle of forces should not have any 2...- bloody_mary
- Post #753
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
- bloody_mary
- Post #751
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
- bloody_mary
- Post #749
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
question 31 R=ϱl/a and R= V/I so v/I =ϱl/a which gives I= av/ϱl and area of wire is π*r^2 both wires are of same material so ϱ is constant so current in P = π*1^2 V/ϱl and current in Q = π*(0.5)^2 V/ϱl (notice it says diameter) then divide by each other and you should get 4/1 which is D- bloody_mary
- Post #747
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
nope but can you share them please?- bloody_mary
- Post #746
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
for question 14 therefore h*f + Wa (since it is perpendicular distance between force and pivot) and the 2Wa part comes from using top of ladder (part resting on wall) as pivot because if distance between pivot and force is 0 then there is no moment so answer is A = Wa+hf = 2wa- bloody_mary
- Post #745
- Forum: A-Levels
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