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will anyone explain me the limit of sequence? ...
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solve for least values x and y... 2(sin x + sin y) - 2 cos(x-y)=3. ...
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the pressure gauge has a spring of k=60 N/m and area of the piston is .5cm2. Its right end is connected to a closed container of gas at gauge pressure of 30 kPa. how far will the spring be compressed if the region containing ...
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Show that (x-2) (x-3) (x-4) (x-5)+2 is always positive ...
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A satellite revolves round the Earth. Air pressure inside the satellite is maintained at 76 cm of mercury. What will be the height of the mercury column in a barometer tube in 1m long placed in the satellite? ...
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A person has got 15 aquantances of which 10 are relatives. In how many ways he may invite 9 guests so that 7 would be relatives? [I am a beginner so please explain the result] ...
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how many ways can the word VENUS be arranged so that the vowels do not change thein orders?? ...
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a pendulum of mass m and length L is pulled back an angle θ and released. After the pendulum swings through its lowest point, it encounters a peg α degrees out and r meters from the top of the string. The mass swings up abo ...
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what is the mass of oxygen that will react with 21 gm of Al? ...
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Displacement of a particle in one dimension under action of a constant force is related to time t by eq. t= x +3 where x is in m and t in sec. a> Find the displacement of a particle when its velocity is 0. ...
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While walking on the ice we take short steps.....as short steps provides:- a)Larger Friction b)Smaller Friction c)Larger Normal force d) Smaller Normal Force ...
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If the velocity of an electron moving in the first Bohr's Orbit of hydrogen has to reduced to 7.27 X 105m,it should be shifted by??? ...
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Three blocks A,B,C of equal mass m are placed one over the other on a smooth horizontal ground as shown in fig. coefficient of friction between any two blocks of A,B,C is 1/2. Find the max. value of mass of d so that the bloc ...
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*Image* The question:- In the arrangement m1=1kg m2= 2kg. Pulleys are massless and strings are light.For wat value of M the mass m1 moves with constant velocity?? A) 6 kg B) 4 Kg C)8 Kg D)10Kg In the 2nd pulley left one is m2 ...
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Prove the following identities:- (1-cos2A)/sin2A - sin2A/(1+cos2A) = tanA Is the question correct??? ...
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esinx+e-sinx=4 Find the maximum value of x. ...
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A free 238U nucleus kept in atrain emits an alpha particles.When the train is stationary, a nucleus decays and a passenger measures that the separation between the alpha particle and the recoiling nucleus becomes at time t af ...
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If earth's escape velocity is 25,000 mph, the moon is 250.000 miles away, why did it take 75 hrs to get there? at 25,000 mph it should only take 10 hrs to the moon ...
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A particle moves along the curve y=x2/2. Here x varies with time as x=t2/2.Where x and y are measured in metres and t in second. At t=2s the velocity of the particle is: (a)2 i - 4 j b) 2i + 4 j c) 4i +2j d) 4i - 2j ...
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A volume V of a gaseous hydrocarbon was exploded with excess o2 and after cooling a contraction of 2.5 times was noted. A further contraction of 2 twice the volume of hydrocarbon was noted in presence of molten KOH. The molec ...
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2 ends of a train with constant accelaration pass a certain point with velocity u & v, find with what velocity with which the mid point of the train will pass the same point ???? Is the answer is (v2+u2)/2 ???? ...
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2 ends of a train with constant accelaration pass a certain point with velocity u & v, find with what velocity with which the mid point of the train will pass the same point ???? Is the answer is (v2+u2)/2 ???? ...
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Ten people are to be sat around a circular table. (CIRCULAR NOT IN A ROW) The ten people consist of five men and five women. What is the probability that not two men and no two women are sat next to each other? ...
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what is the L.C.M of 2 and 3 ? ...
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Find 3-digit numbers that are divisible by 5 as well as 9 and whose consecutive digits are in A.P ...
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If log5k+log35+log1x= 1 then, find the value of x... ...
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If S1,S2.....Sn be the sum of first nterms of n G.Ps whose 1st terms of each unity and C.R are 1,2,3.....n respectively prove S1+S2+2S3+3S4+.....(n-1)Sn= 1n+2n+3n+.....+nn. ...
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The Earth travels 10000km per hr around the sun but we aren't swept off frm earth......why? ...
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Silver Nitrate reacts with calcium chloride according to the following reaction: 2 AgNO3 (aq) + CaCl2(aq) -- > 2 AgCl(s) + Ca(NO3)2 (aq) Calculate the mass of AgCl that would be formed by reacting 100 cm3 of 0.200 M AgNO3 ...
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What is the angle between (vector P + vector Q) and (vector P - vector Q)? how to calculate it???????please help ...
