physics chemistry maths science forums
become expert I help I sign up I login
refer a friend - earn nickels!!   
 advanced
 
Home
Ask & Discuss Questions
Study Material
Experts Zone
Hang Out!
netkid07   netkid07 is offline netkid07's messages in the community
Message
Catalogs Discussion Forums -> Algebra -> permutations and combinations -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
5 replies   
the word's...GARDEN

vovels are....E and A only...

now , put A as the first word....so..no of arrangements...5!

put it as 2nd word....now we have...4 choices to put E..and arrange other words in...4*4! ways..

now put it as 3rd word...now we have..3 choices to put E...and total choices=3*4!

......similarly we have...2*4! and..1*4!....

so answer....5! + 4*4! +3*4! + 2*4! + 1*4! =360 ways

hope it helps...cheero :)
Catalogs Discussion Forums -> Differential Calculus -> lim x tends 0 x^x^x - x^x -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
2 replies   
is the answer 0 ?
Catalogs Discussion Forums -> Physical Chemistry -> Chemical Kinetics Problems -> Go to message
This Post 10 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]
5 replies   
q1---

fraction of molecules of reactants having energy equal to or greater than activation energy= e^(-E/RT)

put the values n get the answer

q3---

k=Ae^(-E/RT)

k=2.418 * 10^-5

E=179.9 kJ/mol

T=546 K

R=0.0821

now put these values and get the value of A

hope it helps...
Catalogs Discussion Forums -> General Knowledge -> What is the best answer when an interviewer asks the reason for changing your last job? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
28 replies   

"it SUCKED"

Catalogs Discussion Forums -> Electricity -> Conceptual Question -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
4 replies   

as it's a metal plate(conductor)....and it touches those edges...so.....net charge now on capacitor is 0



so it's no more a capacitor now.....so capacity becomes infinite

Catalogs Discussion Forums -> Physical Chemistry -> KINETICS how negative catalyst lowers reaction rate -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
5 replies   
increases activation energy or decreases frequency factor
Catalogs Discussion Forums -> Differential Calculus -> f( -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
3 replies   
as

f(x+y)=f(x).f(y)

f(x) is of the form a^x

f'(0)=2

f'(x)=(a^x)ln(a)

f'(0)=ln(a)=2

a=e^2

so...f(x)=e^(2x)

hope it helps....cheero :)
Catalogs Discussion Forums -> Counselling Zone -> plz help....won't take much time :) -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
9 replies   
some more replies plz
Catalogs Discussion Forums -> Magnetism -> ALTERNATING CURRENT -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
5 replies   

i think it's (c)......R/L seconds

Catalogs Discussion Forums -> Counselling Zone -> plz help....won't take much time :) -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
9 replies   

i live in haryana............i culd'nt find that in the list

Catalogs Discussion Forums -> Counselling Zone -> plz help....won't take much time :) -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
9 replies   

i just wanted to know.......HOW TO APPLY FOR RMO ( REGIONAL MATHEMATICS OLYMPIAD ).......????....and any other info that u have about it..... :) ......plz help...rates assurreedddd..........

Catalogs Discussion Forums -> Trignometry -> Prove it -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
3 replies   

write cosx + cos3x = 2cos(2x)cos(x)





it becomes....



cos(2x) + 2cos(2x)cos(x)=cos(2x)[1+2cos(x)]=1/4



cos(2x)[1+2cos(x)]=cos(2x)sin^2(x)=1/8



(1-2sin^2x)sin^2x=1/8



sin^2x - 2sin^4x = 1/8



let sin^2x=t



t-2t^2=1/8



8t-16t^2=1.....solve this eqn for t..u get....t=1/4...now frame the general solution :)

Catalogs Discussion Forums -> Mechanics -> Is it possible for -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
3 replies   
|dv/dt| not equal to 0.....this represents....maginitude of acceleration is finite....means there is some acceleration, wat so ever.......

and d|v|/dt....represents......rate of change of speed......

now consider a uniform circular motion...velocity is changing everytime coz direction of velocity is changing.......

so |dv/dt| is non zero

but rate of change of speed(magnitude of velocity) is 0

so d|v|/dt=0

hope it helps...chhero :)
Catalogs Discussion Forums -> Electricity -> why any charge has eletric field around it? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
4 replies   
well, lemme ask you...how wud a charge know of presence of another charge ???......

every charge sets up an electric field to know the presence of other chages so that they can interact with each other...

.....a quantity that does not depend on magnitude of the charge wud help making problems simpler than ever....and that's what hidden behind this concept....

hope it helps...cheero :)
Catalogs Discussion Forums -> General -> WHAT IS THE DINESION OF C? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
6 replies   

*edited.....THANKS ganesha1991


d=A+D/C^2



d is a constant having dimensions of L^2





so,...D/C^2 should also have dimensions of L^2....so C^2 gets the dimensions of M L^(-5)...C has dimensions of M^(1/2) L^(-5/2)



hope it helps...cheero :)

 
 
Go to:   

Top Offers for goIITians
Correspondence Courses
Brilliant Tutorials
Narayana Institute
Aakash Institute
Classroom/Crash Courses
Narayana - Kota , Delhi , Others
Brilliant Tutorials - Class , Crash
Aakash Institute - Medical , Engg
Online Test Series
Brilliant Tutorials
Narayana Institute
Aakash Institute
Mahesh Tutorials
AMITY      Sri Chaitanya