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Community shelf Community shelf -> THE IITIANS TRUE STORY.............. -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
i didnt get what the moral of the story is..........is mey imandari ki kya baat hai????
Catalogs Discussion Forums -> Mechanics -> A projectile shot at an angle of 60 deg. above the horizontal strikes a wall 30m away at a point 15m -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

verticle component of velo vsin60

time taken to travel 15m=

15=vsin60t - .5gt^2

horizontal compnent of velo=vcos60

30=vcos60t

using these 2 equations find v

cheers!!!

Catalogs Discussion Forums -> About IITs and JEE -> does iit asks for average of pcm to be 60 or more than 60 in each of pcm?? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

iit asks only for atleast 60 percent marks in agregate in all subjects which also includes subjects other than pcm.

 

 

Catalogs Discussion Forums -> Algebra -> binomial theorem -> Go to message
This Post 7 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]

ans is -30

taking (1-x) as one term of a binomial

expansion of the (1-x+x^2)^5

5C0(1-x)^5  +  5C1(1-x)^4 (x^2) rest of the terms of the expansion can be ignored as the coeficient of x becomes greater than 3 in them

now coeffient of x^3 in  5C0(1-x)^5

-(5C0)(5C3)

coeffient of x^3 in  5C1(1-x)^4 (x^2)...... FIND COEFFIENT OF X IN EXPANSION OF(1-x)^4

-(5C1)(4C1)

SO COEFFIENT OF X^3 IS -(5C1)(4C1) -(5C0)(5C3)

=-10-20=   -30

cheers!!!

plz rate

Catalogs Discussion Forums -> Electricity -> very easy problem which im not able to solve....(no wonder!)a solid conducting sp -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

@KARNA POST THE SOLN

BUT I THINK RADIUS IS NEEDED TO SOLVE THE QUESTION....

Catalogs Discussion Forums -> Chemistry -> leaving group -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

OTs is the best leaving group

Community shelf Community shelf -> Fasten up your calculations using principles of Vedic Maths -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
quite useful!!!!
Catalogs Discussion Forums -> General Physics -> plz solve dis......... -> Go to message
This Post 4 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]

let initial Acceleration =a

Deacceleration=d

t1......time taken to travel alpha distance similarly t2 ......time taken to travel  beta distance.

t1+t2=t

 =.5a(t1)^2

=Vmax(t2) -.5d(t2)^2

USING FORMULA v=u+at

Vmax=a(t1)

for second part

a(t1)=d(t2)

using these eq find max velo and initial accle

 

Catalogs Discussion Forums -> Non IIT Institutes -> How to crack SCRA................... -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

@sciencecrazzy to correct u there are 44 vacanciess this year of which 22 are for general .

scra get mechanical engeneering degree  from Indian Railways Institute Of Mechanical And Electrical Engineering  jamalpur and workshops are held in bit mesra ranchi.

Catalogs Discussion Forums -> General Knowledge -> which team do u think will win the ipl final?? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

DC for sure..........................!!!!!!!!!!!!

Catalogs Discussion Forums -> Non IIT Institutes -> How to crack SCRA................... -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

@bladex if you getting in an iit  with a good branch than why to try for scra.

but i would like to say that being an scra is only second to getting a degree from iit in a good branch.

well talking about scope  of being an scra you become a first class officer which commands great respect .its only second to being an ias.

scra niether has to pay any fees for enginnering rather he gets stipends of about 8k pm during engineering.

but its not for those who are aiming of going abroad

 

 

Catalogs Discussion Forums -> Counselling Zone -> Sir, my VIT ranking is 1885 & got 153 in ENAT- expecting ranking within 1200, which will be better -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

of course manipal

Catalogs Discussion Forums -> Algebra -> give the graph of y=(x+1)/(x-1) -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

i agree with nugo its hyperbola

Catalogs Discussion Forums -> Trignometry -> find the no. of solutions of y=log(sinx) and y=cosx -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

ya ....when domain not defined in an interval  as in this questions ...infinite solns will be there

else if domain restricted in the interval [(2n)pie, (2n+1)pie] two solns will be there.

Catalogs Discussion Forums -> Trignometry -> find the no. of solutions of y=log(sinx) and y=cosx -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

@nogu just see the graph abov there are only 2 solns

Catalogs Discussion Forums -> Trignometry -> find the no. of solutions of y=log(sinx) and y=cosx -> Go to message
This Post 15 points    (Olaaa!! Perrrfect answer.   in 3 votes )   [?]

 daw the graph of log(sinx) and cosx

the number of points at which both graph intersects is total no of solutions

the graph intersects at two points hence total no of solutions is 2

green is cosx

blue is logsinx              this is the case when domain is in the interval [(2n)pie, (2n+1)pie]

 

 

Catalogs Discussion Forums -> Mechanics -> PHYSICS QUESTIONS -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

plzzz post the questions .......not everyone has sl loni

Catalogs Discussion Forums -> General Physics -> How much work should be done on a bubble of soap to increase the diameter from 2 cm to 5 cm. Surf -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

work done will be equal to===surface tensionxchange in surface area

Catalogs Discussion Forums -> Counselling Zone -> hey frnds i got good rank in SRM college it is good college ......????? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

average level college neither good nor bad something in the middle

Catalogs Discussion Forums -> Physical Chemistry -> The value of Van der Waals constant 'a' is the largest for (a) O2 (b) NH3 (c) H2 (d) N2..explain.. -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

ans is nh3 becuase it is easily liquefable then the rest mentioned gases

 
 
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