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Mathematics: Post your doubts here!
i always have trouble in trigonometry ... i reached into 3sinxcosx=1 .. i checked the mark scheme x=0.365 radians .. when verifying it turns to be correct but however i don't know how I am supposed to reach this value when sin and cos are multiplied .. PLZ HELP URGENTLY thanks further ;) -
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Mathematics: Post your doubts here!
I need urgent help please q1 how did we get a variance of 96 ??!!! http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_s05_qp_1.pdf -
Mathematics: Post your doubts here!
Hello for statistics p6 i am having difficulities for finding the variance .. it's equation is 1/n sigma (x-random number)^2 - mean^2 ... however the mean to be calculated differ sometimes i dnt know why, i need to find something called the coded mean not the ordinary mean .. I need help to know... -
As physics p1 MCQS YEARLY ONLY.
GUYZ relax the exam is after several hours, studying now will confuse u and make it worse .. -
As physics p1 MCQS YEARLY ONLY.
that is the rule, try drawing the stationary wave inside the tube, the closed ended, will have a node at the closed end, and antinode at the open end... the distance between a node, and an antinode is 1/4 wavelength .... from an open ended tube, antinode is formed on both sides, so there must be... -
As physics p1 MCQS YEARLY ONLY.
sorry I meant november 2011 V1, but okay, thx 4 ur help -
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As physics p1 MCQS YEARLY ONLY.
for number 15, the drop is falling at terminal speed, so weight = air resistance, retarding force due to air is kv (which can be considered as air resistance), so mg=kv,, v=mg/k ,,, kinetic energy = 0.5mv^2 ,, so u substitute v with mg/k, and u get the answer ;) -
As physics p1 MCQS YEARLY ONLY.
No frequency found lower than the 1 of the resonance means, that this is the fundemental harmonic, for tube X, needs a minimum of a quarter wavelength for a resonance, so conider both tubes have a length of 12m for example, so tube X will be 12m, so the stationary wave inside, which is just a... -
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As physics p1 MCQS YEARLY ONLY.
no 32, y the resultant force is zero ? -
As physics p1 MCQS YEARLY ONLY.
novemeber 2011 V2 ,, number 26 plz help -
As physics p1 MCQS YEARLY ONLY.
guyz plz help in november 2009, it is the hardest paper ... if u have doubts in some questions leave them, other ppl will be there 2 make them clear -
As physics p1 MCQS YEARLY ONLY.
v is in ms^-1,, u need 2 check which choices give the ratio of m:s 1:-1 .... it is A because g is ms^-2 * lamda in metres,, so the unit will be m^2s^-2 ,,, the square root of exponents, as in radical uncertainities is multiplied or divided,, if answer power 2 is given, the answer is multiplied... -
AS Physics P1 MCQs Preparation Thread.
November 2010 V2 *7 *8 *9 *15 *25 *26 *32 -
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Physics P21
Lol most of ur answers are right, and i got almost nothing of wat u got :( -
Physics P21
i know, but u know in each session there must b a question out of the syllabus