Recently Active Questions

find lim(x→2)(7x3+3x2+9x+10)*lim(x→0)(x2-4) ...

lim(x→∞) (x3+4x2+x+3)/lim(x→∞) (3x2+5x2+7x+8) ...

The number of seven digit integers, with sum of the digits equal to 10 and formed by using the digits,1,2 and 3 only,is: a)55 b)66 c)77 d)88 I got b)66 as the answer but tata mcgraw hill says that c)77 is the answer.who is ri ...

i got four pts for objects in oblique collision in arihant i dont know how it came.please explain of these three points are written below please explain 1)A pair of equal and opposite impulses act along common normal directio ...

ACCORDING TO STEFEN'S LAW (RADIATION) E=εσT4 HERE WHAT DOES 'E' SIGNIFY i.e. WHAT IS 'E'? ...

Just tell me this. When we have an inequality a < x < b where b > a, does it imply that x > a AND x < b or x > a OR x < b? Put in set theory, is it a union or an intersection? ...

the ratio of acc due to gravity at a depth h below the surface of earth and at a height h above the surface of earth h << radius of earth (A) is constant (b) increases linearly with h (c) increases parabolically with h ...

a uniform thin hemispherical shell is kept staic on an inclined plane of an angle=30 deg if the surface of the inclined plane is sufficiently rough to prevent sliding then the angle @(alpha) made by the plane of hemisphere wi ...

a uniform thin hemispherical shell is kept staic on an inclined plane of an angle=30 deg if the surface of the inclined plane is sufficiently rough to prevent sliding then the angle @(alpha) made by the plane of hemisphere wi ...

Which of the following forces are conservative in nature? a. F = a\hat{i} + b\hat{j} b. F= ax\hat{i} + by\hat{j} \,\,\, (a\ne b) c. F= xy\hat{i} d. F= x{^2}y\hat{i} + 2xy^{2}\hat{j} ...

There is a n-sided regular polygon having n number of vertices. I randomly choose a line segment joining any 2 vertices of the polygon. What are my Chances that it is a diagonal of the polygon. *Image* I hope that the questio ...

*Image* The setup shown consists of two identical rods (mass m) hinged together at the ends. This setup is held in the position shown. Now we start applying a constant force F to the free end as shown Find the initial angular ...

Please give solutions for these:- 1) If a2+b2+c2=4, x2+y2+z2=9 then what is the maximum value of ax+by+cz ? 2) Sum of the series upto 11 terms : 1.2.3.4+2.3.4.5+..........+n(n+1)(n+2)(n+3) 3) Prove 1.3.5.7......upto 100 terms ...

From Boyle's Law we get V=K/P (K=constant) So, if a comparatively infinite pressure is exerted on a container containing gas, will the volume not become 0? (provided that the gas does not liquiefy or solidify on application o ...

A thin rod is held resting on a rough ground with its length inclined at an angle (theta) to the horizontal. The coefficeint of friction between rod and ground is (mu). Show that when the rod is let go it will start slipping ...

FIND THE DOMAIN OF (X-1)/X-2{X} ?WHERE {.} DENOTES.FRACTIONAL X?? ACORDING TO THE GIVEN ANSWER IS- (-∞,0)U(0,1]U[2,∞).. BUT I DONT THINK THE ANWER IS CORECT BCOZ U TAKE ANY POINT IN [1,2] THE POINT WILL SATISFY THE GIVEN ...

1.a long horizontal rod has a bead which can slide along its length, the bead is initially placed at a distance L from one end A of the rod . the rod is set in angular motion in the horizontal plane about the end A with const ...

In the AC network shown in fig., the rms current through the inductor and capacitor are 0.6A and 0.8A respectively. Then the current coming out of the source is *Image* this quest is also from arihant objectives.... plz help ...

in the fuct. f(x) = | Sin x | ...... which points are described as non-diff points...... i 've ans it as at x=nπ , n ε I.... the grapgh will be non-differential,..... but the ans given in the buk is at only x=0 , the graph ...

1.A particle of mass m1 collides elastically with a stationary particles of mass m2 (m1>m2). Find the maximum angle through which the striking particle may deviate as a result of collision. 2. A shell flying with velocity ...

Fundamental period of : [x]+[2x]+[3x]+[4x]+[5x]-15x is:(where [ ] is greatest integer fn: ...

The pair of compounds which cannot exist together in solution is- (A) NaHCO3 and NaOH (B) NaHCO3 and H2O (C) NaHCO3 and Na2CO3 (D) Na2CO3 and NaOH ...

What do we mean by phase difference regd waves?When I see the diagram of two waves with phase difff of pi, the crest of one is shown over trough of other, then i wonder what wud be the diagram for phase diff of 2pi and why it ...

the elecric potential decreases uniformly from 120V to 80 V as one moves on the x-axis from x=-1 to x= +1cm . the electric field at the origin (a) must be equal to 20 V/cm (b) may be equal to 20V/cm (c) may be greater than 20 ...

which one of the resonating structures of 1-methoxy-1,3-butadiene is least stable : _ + a)CH2-CH=CH-CH=O-CH3 _ + b)CH2=CH-CH-CH=O-CH3 _ + c)CH2-CH-CH=CH-O-CH3 _ + d)CH2=CH-CH-CH-O-CH3 explain the reason ...

*Image* Ans.q2 only if you are 100°/° sure ...

for beginners or class 11 people... easy for ones knowing calculus... a particle is moving with constant speed in the x-y plane... the trajectory is given by the path is y=ax3+bx2+cx+d find the point of time when acceleration ...

1. A uniform chain of mass M and length L is held vertically in such a way that its lower end just touch the horizontal floor.The chain is released from rest in position. Any portion that strikes the floor comes to rest .Assu ...

*Image* is a. trans b. Z c. both correct d.NOT ...

Q. A boy with a mass of 70kg is standing on a bathroom scale in a lift which is accelerating upwards at 3m/s2. Calculate the resultant force on the boy. Ans: 210 N Shouldn't the resultant force be 910 N? ...