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Let z be a complex number for which !2zcos@+z2!>1,if !z!<k,then the least positive integral value of k is ? ...

Quadratic equation x2+[a2-5a+b+4]x+b=0 has roots -5 and 1,then nuber of integral values a is:(where[.] denotes the greates integer function) ...

a uniform length L is actd upon by 2 colinear forces P ND Q...APPLIED 2 ITS ENDS IN OPP direction..calculate tension at a distance 'l' frm the end where force P IS APPLIED... ...

The number of neutrons emitted when 235]U92 undergoes controlled nuclear fission to 142Xe54 and 90Sr38 is ?? why is the ans given by JEE 4??how can it be 4?? ...

*Image* oops i got it now sorry for silly mistake thanx for help....thread closed! ...

*Image* FIGURE (a) A smooth wedge of mass M rests on a smooth horizontal surface. A block of mass m is projected from it's lowermost point with velocity V0 . What is the maximum height reached by the block ? ...

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plz help me which of the two is more basic.... (C6H5)2NH , CH3NH2 .....[CBSE 2011] ...

is this true/false 'degree of diff eqn represents no. of family of curves' i think its false pl confirm this ...

How do you prove that (sgn{x})sgn{x} is even, periodic and discontinuous? ...

sorry got it thread closed! ...

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The heat of combustion of acetylene is 312 kcal . If heat of formation of CO2 and H2O are 94.38 and 68.38 kcal respectively , calculate C triple bond C energy . Given that heat of atomization of C and H are 150 and 51.5 kcal ...

famous question which is mostly solved using ground frame i want u to solve it in the frame of elevator (i.e. non-inetial frame) a block on floor of elevator which starts acelerating down with 12m/s2 will get displaced by how ...

Q) A student attends an exam carrying four sets of question papers , each set carrying m questions with equal marks alloted. To qualify the exam, he needs to get 2m questions correct. In how many ways can he qualify the exam ...

The number of real solutions to the equation a=[ a/2 ]+[ a/3 ]+[ a/5 ] where [.] deonotes the greatest integer function is (A)30 (B)60 (C)45 (D)75 ...

sorry thread closed! ...

*Image* i am saying that relative velocity of A does have a component of its velocity along AB .....but net relative velocity is not along AB....so how can collision happen? ...

with d4 configuration,Cr(2+) acts as reducing agent but Mn3+ acts as oxdisng agent.why? thanks ...

Consider a rectangular basin with a very wide mouth. When a tap above the basin is opened, it fills in time T1. With the basin filled completely and the tap closed, opening the plug at the bottom drains the sink in time T2. W ...

q: Sodium light has 2 wavelengths; lambda1=589nm and lambda2=589.6nm.As the path difference inc, when is the visibility of the fringes maximum?? Ans- 0.29mm.. if i find a position where bright fringes of both will coincide ot ...

Let Fm be the m-th Fibonacci number given by F1 = F2=1 and Fm+2 = Fm+1 + Fm for all m≥1 Show that summation of C(n,k) = Fm+1 Here the above sum is over all pairs of integers n≥k≥0 with n+ k = m ...

Diffrenciate |x| w.r.t x using first principle. ...

f is a real-valued differentiable function defined on [0,1]. If f(0)=0 and f(1)=1, then prove that there exist distinct points x1,x2 in [0,1] satisfying 1/f'(x1) + 1/f'(x2) = 2 ...

The equation 22x+(a-1)2x+1+a=0 has roots of opposite signs then exhaustive set of values of 'a' is (A)a<0 (B)aE(-1,0) (C)aE(-∞,1/3) (D)aE(0,1/3) ...

IIT 2003>...............Air is blown into a pipe of radius b,with velocity v. After some time the air stops at the end of the pipe and Bubble grows and detaches from the pipe.If surface tension is S, density is K. Find the ...

prove the follwoing inequality g+k√(g-k)<g such that k<g ...

what is the rms value of all the factors of 144??i tried but donno how two calculate the sum of factors taken 2 at a time!!!:( ...

please help asap more acidic-- i]4 nitro benzoic acid,or ii] 3,5 dinitro benzoic acid? i need d reason ans ii>1 thanks ...