Messages posted by MRITYUNJAY VATSHAYAN

find the equatiion of the straight lline which is a tangent at one point and normal at another point to the curve y=8t^3-1,x=4t^2 +3

ABC is an isosceles triangle inscribed in a circle of radius r.If AB=AC and h is the altitude from A to BC and P be the perimeter of triangle ABC,prove that

p= and find

where p is the perimeter

structure is not clear.please make it clear.i know its not possible to draw.

what is the lewis structure of H2NOH,H2ONH

a buffer is a solution whose pH is not altered to any appreciable extent on addition of acid or base.

Buffer solution is prepared by addition of weak acid with the salt of its strong base(e.g.solution of nitric acid and sodium nitrate is a buffer solution).

Buffer solution is also prepared by mixing weak base with the salt of its strong acid.

HYDROLYSIS:-when an acid and base reacts to form salt and water then the salt ionises in water and ions of the salt reacts with water.this is called hydrolysis.If the salt formed is an acidic salt(formed by reaction of strong acid and weak base) the anion of the salt which came from weak base will react with water and opposite case happens if the salt formed is a basic salt.in this case the cation of the salt which came from weak acid reacts with water.

height from which the ball is thrown=70m.angle which the ball makes with the horizontal=30'.let us take horizontal axis as x-axis and vertical axis as y- axis.

velocity of ball along x-axis=50 into cos30 = 25*root(3).

veloity of ball along y-axis=50*sin30=25.

on applying newtons second equation of motion along y-axis,y=25*t + 1/2*(-g)t*t or,70=25*t -1/2*10*t*t.and from this equation we get the value of t=2 sec.

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