Wednesday
April 16, 2014

Posts by Krishna


Total # Posts: 20

maths
the distance between two stations is 340 km two trains start simultaneously on parallel tracks to each other . the speed of one of them is greater than that of the other by 5 km/hr. if the distance between the two trains after 2 hrs of their start is 30 km , find the speed of ...

physic
a sportcar moving from rest 0 to 100km/h ..there hanging a pendulum in the car..what will be the angle pendulum can make with vertical line??

Algebra
the ans is 0

Maths
2m

chemistry11
5/2

chemistry
for depolarization of 1 mole of KMnO4, the moles of H2O2 required is_________

College Physics
A body of mass m breaks up into 2 parts of rest mass m1 and m2 with velocity v1 and v2 ,what will be the energies of m1 and m2 in terms of m,m1,m2 and c,the velocity of light.

Physics
A body of mass m breaks up into 2 parts of rest mass m1 and m2 with velocity v1 and v2 ,what will be the energies of m1 and m2 in terms of m,m1,m2 and c,the velocity of light.

chemistry
2.35*10^-4M,,Mg(OH)2 what is the pH of this solution

Chemistry
SIR PLEASE EXPLAIN THE ANSWER

calculus--please helpp
thanks so much!

calculus--please helpp
if the line 3x-4y=0 is tangent in hte first quadrant to the curve y=x^3+k, find k. all i know is that its related to finding a derivative and i m basically completely lost....can please someone provide me some help?????

Physics
What is boyle's law?

puzzle
Who to join 9 points place in a form of square in only 4 moves witg the help of two points place in outer square

Chemistry
C6H6 + (CH3)3Cl -AlCl3---> C6H5(CH3)3 C6H5(CH3)3 ---- HNO3/H2SO4--> para-NO2 C6H5(CH3)3---- major ortho-NO2 C6H5(CH3)3---- minor

Chemistry
Quinine has a tertiary amine group so acts as base QN + H2O -----> QNH+ + OH- given pka is 8.52 -log ka=8.52 ka= 3*10^-09, for conjugate acid base pair at 25degrees Celsius kw= ka*kb therefore Kb= kw/ka = 10^-14/ 3*10^-09 = 3.4 *10^-06 from eqation kb=[QNH+][OH-]/[QN] QN + ...

Physics
Assume that a deposit of oil is located 2000 m directly below. Estimate the size of the deposit, assumed spherical.

college
i have free speech.my topic is have ever done anything that you wish you hadn't done?what happened and how the situation might have been different if you had acted or thought differently. really i dont know,how can i speak because i dont know about this.can you help me,can...

chem
the answer is not clear

university of the south Pacific
Is sodium chloride an Ionic bonding or covalent bonding?

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