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IS there WAVES in P4?
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Just draw half rectangles with their heights at +5v and -5v since it can never exceed the supply. Each time, draw the half rectangle opposite to the vin , if the cycle of vin is +ve, draw vout at -ve and vice versaCan someone please help me with oct nov 2014/43 Q.10/b/ii
The elementary charge (1.6 x 10^-19) is a multiple of the differences of the given charges.Paper 4: Doubt on repetitive question.
Milikan's experiment, where they give you around 5 values of charges on oil droplets and you are required to find the elementary charge.
in p5 r we supposed to extend the best fit line or draw it frm the lower point to the upper point?
The elementary charge (1.6 x 10^-19) is a multiple of the differences of the given charges.
Ok guys I have a question about momentum.
Assume a scenario where two masses of equal masses and acceleration are moving towards each other about to collide.
Can we predict their behavior after collision. Do they bounce back with same velocity or acceleration? Or stick together and stay stationary? Or is it impossible to predict?
but in s2014 v 51 ths isnt the case... the lower n upper ends are till the plotted points... they r nt extended... :/extend it
he said nthng abt p 5.. (-_-)...
I don't know. If it's from the markscheme, it says the lower end should PASS between ...... In my opinion, if this end at that point, the MS should have said 'the lower end should BE at point ....' + we don't know if the line is exactly at a point, there could be an error at that point?
actually, i haven't yet read much about how the practical papers should be tackled, so I can't help here (can't be 100% sure what to do here).
What did your teacher say about these?
...
I don't know. If it's from the markscheme, it says the lower end should PASS between ...... In my opinion, if this end at that point, the MS should have said 'the lower end should BE at point ....' + we don't know if the line is exactly at a point, there could be an error at that point?
actually, i haven't yet read much about how the practical papers should be tackled, so I can't help here (can't be 100% sure what to do here).
What did your teacher say about these?
Apply 2as=v^2-u^2A cannon fires a cannonball with initial speed v at angle α to the horizontal.
Which equation is correct for the maximum height H reached?
A H = v sinα / 2g
B H = g sinα / 2v
C H = (v sinα)2 / 2g
D H = g2 sinA / 2v
i found the vertical component = Vsina ...hence, options B and D are ruled out.... but why is the answer C?
Thank you very much but what about the width of the rectangle. Im still confused about that.Just draw half rectangles with their heights at +5v and -5v since it can never exceed the supply. Each time, draw the half rectangle opposite to the vin , if the cycle of vin is +ve, draw vout at -ve and vice versa
The width depends on where Vin is 0, so everytime the graph of Vin is 0 you switch the polarity try sketching it and upload it here so I check how you sketched itThank you very much but what about the width of the rectangle. Im still confused about that.
yea but i was confused ...check at
http://physics-ref.blogspot.com/2014/07/9702-june-2013-paper-42-worked.html
bcoz at t=0, the displacement is not zero. if you plot a graph, the oscillations would correspond to a cos graph, not a sine.
for sine, when t=0, displacement is also zero
...well, this should also have been in your notes
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