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i had given this test and i have my counselling on 3rd .but now i dont think i would think about going itnto this institute.i really feel very sorry for you buddy.
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but kindly tell me how to solve this.
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A hollow sphere of radius r is resting on the surface of a horizontal surface. At what height h above the table should the sphere be hit with a cue held horizontally so that the sphere will start moving with no friction between it and and table?A)7r/5b)5r/5C)2r/5d)5r/3
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let the nos be a and b. Let A,G,H be a.m ,g.m.,h.m.we know A,G,H are in G.P.so, G^2=AH (eqn1)given:G=H+12 (eqn2) A=G+13 so,G=A-13 (eqn3) eqn(2)*Eqn(3) G^2=AH-156-13H+12A eqn(4) compare (1) and (4)12A=13H+156 eqn(5)by(2)&(3)A= H+25 eqn(6)by(6)&(5)A=169&H=144We know, A=a+b/2 338=a+b eqn(7) by knowing the value of A&H we get the value of G 156but G^2=ab so, ab=24336 eqn(8)by (7)&(8) we get the nos as 234&104
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you can solve it by applying basic eqns in kinematics.initially the bullet was at rest and it has aquired the velocity of 400m/s after travelling through barrel of 0.80m. just find the accn involved and you will get the force .u=0v=400m/ss=0.80ma=v^2-u^2/2s =1000m/s^2force=m*a =5N ans
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Q.A cylinder of mass M and density d1 hanging from a string is lowered into a vessel of cross sectional area A containing a liquid of density d2(d2
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if you are really talented then getting 80% in cbse shud not be a big deal for you.akshant
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according to me this is the best decision taken by any government.sibal needs to be appreciated. this will discourage cramming in coaching centres . just cramming the results of the articles and not having the fundamental knowledge would not help
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if A x B=A x C.then is it right to say that B=C,where A,B,C are three vectors
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explain the difference between enthalpy of fusion and enthalpy of vaporisation
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what is the most important part in the chapter structure of atom (class11) .
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how many papers are there in iit exams and give necessary information regarding how all india ranking is determined.
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what type of mixture is milk.?homogeneous or heterogeneous.
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Vriti Edustore
