is it 2500/3?  pls confirm..then i shall post my soln..

hey the answrs according to the solution given by Brilliant tutorials is:

 

1. A,B

2. C,D

3. A,B,D

4. A,C

 

and my friend ganesha..u can consider it as a system only wen u can confirm that they move together..please justify...

i am really very tensed about such kind of questions..pls somebody help........with proper solution..

two blocks of masses m_a=2kg and m_b=4kg are kept on an inclined plane of inclination  = 37degree as shown.The coefficient of friction bw A and B is ₁ and bw B and surface is ₂. accelerations of blocks A and B are a₁ and a₂. then match the following.

 

          column I                                                                        column II

1.a₁=a₂                                                                                               A.   ₁= 0.3 and ₂ = 0

2.a₁a₂                                                                           B  ₁= 0.8 and ₂ = 0.8

3.if work done by friction on block B is zero,then               C. ₁= 0 and ₂ = 0.2

4.if net contact force on block A is normal force,then         D. ₁= 0.4 and ₂ = 0.8

1. if f_p(a) = ^p  _k=1 ( cos ka/p² + i sin ka/p² ). then what is _n f_n() ?

 

2. if | z- i Re(z) | = | z- Im (z) |,then z lies on:

       a. Re(z)=2

       B. Im(z)=2

       c. Re(z) + Im(z) = 2

       D. none of these

 

3.if a is a complex constant such that az2 + z + conjugate(a) = 0 has real root then

     a. a+conjugate(a) = 1

     b. a+conjugate(a) = 0

     c. a+conjugate(a) = -1

    d.the absolute value of real roots is 1

 

4.what is the reflection of comlex no. 2-i / 3+ i in the straight line z(1+i) = conjugate(z) ( i - 1) ?

please give a generalised solution of such questions...

 

two blocks of masses m1 and m2 are kept on an inclined plane of inclination  as shown.The coefficient of friction bw A and B is ₁ and bw B and surface is ₂. accelerations of blocks A and B are a₁ and a₂. then for what values of ₁ and ₂ will a₁=a₂ and a₁a₂  ??

hey himanshu...i got the point..

 

in case of favourable cases..then u have considered that there will be 14 cars in 21 places...but it has to be 22 places because one of his own,and the adjacent places..so its 25-3=22

hence the answer wud be 22C14 / 24C14 = 15/92

9 cards are drawn at random from a set of cards marked either 1,0 and -1.It is equally likely that any of the three numbers may be drawn. then what is the probabiltiy that the sum of the numbers drawn is zero?