Qualification > Sciences
ALL CIE PHYSICS DOUBTS HERE !!!
Rvel Zahid:
lol yeah not wearing a hat. its summer time :D
still man thanks for prompt and comprehensive response.
i didn't really got the 15th mcq,
the gravitational force shouldn't be constant on the liquid? :/ or if we r talking bout liquids we always have to consider centre of gravity while calculating G.P.E
another mcq: http://www.xtremepapers.com/community/attachments/physix1-jpg.6355/
SkyPilotage:
When calculating g.p.e h = is the height of the centre of gravity from the bottom.
For that other mcq, you have to draw out several lines from the origin to each of the points A/B/C/D.
So you will notice that the line is steepest i.e highest gradient when it connects the origin and point C. Gradient is determined by V/I.
Since R is I/V so at point C , it is the lowest resistance.
A common error is drawing tangents to the points on the graph so be careful.
Rvel Zahid:
ok sky pilot some more : http://www.xtremepapers.com/CIE/International%20A%20And%20AS%20Level/9702%20-%20Physics/9702_s11_qp_11.pdf
Q. 34
http://www.xtremepapers.com/CIE/International%20A%20And%20AS%20Level/9702%20-%20Physics/9702_w09_qp_11.pdf
q.9 and q. 14
ashwinkandel:
Rvel Zahid I have attached solutions to your questions:
SkyPilotage:
--- Quote from: SkyPilotage on April 04, 2012, 03:09:06 pm ---Q1.Can someone shed light on the virtual earth approximatio in operatioal amplifiers?
-Is it a rule for all op-amps?
-why does the non-inv input have to be the same as the inv input? i.e why does the diff have to be zero?
Q2.How does reducing the gain cause less distortion, increased bandwidth and stability ?
Q3.Are the guard bands included in the bandwidth or only the sidebands?
Thank you in advance.
--- End quote ---
If anyone would be kind enough :)
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version