|

 First name Last name's messages in the community 1 2 3 4 GO Go to Page...
Message
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
two charges Q and Q are placed a distance x apart. a third charge q is placed in between them such that the three charges are in equilibrium. what is q in terms of Q ?
 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]
It is a scalar because it does not follow the laws of vector addition, and adds up just like scalars. for example, 5 ohms + 5 ohms is 10 ohms regardless of the direction of the two currents and the angle between them. So current is a scalar quantity.
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
id a function is continuous and takes only rational values, then t must be a constant function. therefore f(1)=f(2)=f(3)=........ therefore the equation becomes x^2+2x+3=0. therefore complex roots
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
cos2x= 1- 2(sinx)^2 so..... 3cosx-(sinx)^2=0 implies... 3cosx -1 + (cosx)^2=0. soo after solving, u'll have cosx= (0.5)[-3+sq.root(13)] or cosx= (0.5)[-3-sq.root(13)] only one of these lies in between -1 and +1. so there is just one solution...
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
???????????????
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
i dont think sooo. but remember this- mirror and lens formulae are applicable only for thin lenses or mirrors
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
if 90 is in degrees, it is 1. but since u didnt mention anything, it means 90 radians. sin1= 8.41470984807896505 * 10^(-1)
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
it's actually a convention. according to the above proof, even (-1)! = 1. (if it makes sense). the no. of ways we can arrange n objects taking all at a time is n!(i.e. no. of permutations is n!) . that is nPn= n! using the formula, n!/(n-n)! = n!. therefore 0!=1. otherwise u can also do a similar thing with combinations.
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
light is a form of energy. it helps us see. according to wave theory of light, light is an electro-magnetic wave. that is it has both electric and magnetic fields.according to particle theory of light, it consists of photons (energy quanta or energy packet)...
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
alkanes have only single bonds whereas alkenes have atleast one double bond
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

is        i =sq.root(-1) or i = (plus or minus) sq.root(-1)        ???

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
u can get inverses of functions here http://www.wolframalpha.com/widgets/gallery/view.jsp?id=d08726019e4a2a15cb1d49092e4d0522
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
the function is one-one so there does exist an inverse to this function. but i don't know it
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
there is no speific method for solving a cubic equation.
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

suppose   g(x) = a.f(b.x+c) + d                     how can we get the grapgh of g(x) from the graph of f(x). Should we go in the order a,b,c,d ; should we first apply transformation b, then c, then a, and then d ; or can we apply transformations in any order ??

 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]
0 kelvin not -273 kelvin @ Viraat Gupta
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
(tanA+tanB)/(1-tanA.tanB)
 1 2 3 4 GO Go to Page...
 Go to:  Select a forum   Board Exams - CBSE, ICSE, State Boards   Course Material   Computer Science   Physics   General Physics   Mechanics   Optics   Thermal Physics   Electricity   Magnetism   Modern Physics   Mathematics   Algebra   Trignometry   Analytical Geometry   Differential Calculus   Integral Calculus   Vectors   Chemistry   Physical Chemistry   Organic Chemistry   Inorganic Chemistry   Institutes & Courses   Coaching Institutes & Course Material   About IITs and JEE   Non IIT Institutes   Counselling Zone   Parents Corner   Parent Discussion Board   Biology (for Medical Entrance)   Botany   Zoology   Fun Zone   Lounge   Games, Puzzles and Quizzes   General Knowledge

Name

Mobile

E-mail

City

Class