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Take out just one letter from the previous word to create a new word! =)
century- umarashraf
- Post #180
- Forum: Games and Fun Stuff
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AS Physics P1 MCQs Preparation Thread.
17.. efficiency=output/input * 100 if input is 100 output is 8... so 8/100 * 100 =8... 31... electron would be attracted by the positive charge, so B and D are fundamentally wrong... now since the electron is moving against the electric field, it will be deflected out of the field by the...- umarashraf
- Post #1,219
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
15... work done is equal to change in kinetic energy.. that is 8-4=4J in first case.. we know that W.D=Fs.. so F=4/s by the second statement, let the final Ek be equal to x... so.. x-4=Fs ... x-4=2(4/s)(2s) this will give u x-4=16 and then x=20J...- umarashraf
- Post #1,218
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
34 first... r is directly propotional to length/cross sectional area... for X.. R= L/(pie)(D/2)^2 ----. R=4L/pie D^2 for Y.. R=2L/(pie)D^2 ----- R= 2L/(pieD^2)...- umarashraf
- Post #1,216
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
for the 9th.. i think we cant prove it numerically but one think is for sure that initial momentum is 2mv... and if collision were perfectly elastic ones, max. momentum change would have been 2mv-(-2mv) =4mv... now it is given that collision was inelastic, it momentum change should have been...- umarashraf
- Post #1,214
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
14. total distance travelled will be 3m.. 0.5/sin30... work done by the will be used to overcome frictional work done and the resistance by the inclined plane... resistive W.D = 150 * 3 = 450J work done against slope= mgsin30 = 200sin30=100J. and now word in lifting it...- umarashraf
- Post #1,212
- Forum: A-Levels
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AS Physics P1 MCQs Preparation Thread.
22. Mate option B and D will produce the extension on 1/2 ratio for every weight.. so forget about them... consider A.. spring with high K is difficult to be expanded.... by placing a high k spring down will enable it to work both ways around.. when a heavy mass is to be suspended, rigid box...- umarashraf
- Post #1,211
- Forum: A-Levels
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zinda ho..??/ chalang nahi lagai abhi tk..???
zinda ho..??/ chalang nahi lagai abhi tk..???- umarashraf
- Profile post
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