Tuesday
September 23, 2014

Posts by rishabh


Total # Posts: 16

physics
The most convenient way to express vectors in the two dimensional plane is in the familiar (x,y) Cartesian coordinates. However, one can express vectors in other coordinate systems as well. For example, another useful coordinate system for the plane is polar coordinates (r,&#...
June 10, 2013

maths
Consider a 25×25 grid of city streets. Let S be the points of intersection of the streets, and let P be the set of paths from the bottom left corner to the top right corner of which consist of only walking to the right and up. A point s is chosen uniformly at random from...
June 10, 2013

maths
Will is given 10 rods, whose lengths are all distinct integers. However, he finds that given any 3 rods, he is unable to construct a (non-degenerate) triangle with them. What is the shortest possible length for the longest rod?
June 10, 2013

maths
We have a list of N consecutive 3-digit numbers, each of which is not divisible by its digit sum. What is the largest possible value of N?
June 10, 2013

maths
x+1 whole cube but now i got the answer thanks..
June 10, 2013

maths
answer is wrong
June 10, 2013

maths
A polynomial f(x) satisfies the equation f(x)+(x+1)3=2f(x+1). Find f(10). that is (x+1) whole cube
June 10, 2013

physics
The furthest distance from the Sun to Earth is df=1.521E8 The shortest distance from the Sun to Earth is ds=1.47E8 To simplify the problem, assume that the Earth's axis is always perpendicular to the plane of its trajectory around the Sun. The Sun always shines on half of ...
June 9, 2013

physics
Estimate the time difference between the longest amount of daylight in one day and the shortest amount of daylight on one day in seconds over the course of a year if you lived on the Earth's equator
June 9, 2013

maths
can anybody solve it..?
June 9, 2013

chemistry
molarity of kmno4 and strength of kmno4 in M/25 solution experiment of oxalic acid.......
January 23, 2013

PHYSICS
A positive charged particle placed on a frictionless table by attaching it to a string fixed at one point of magnetic field is switched on in the vertical direction, the tension in the string (A) will increase (B) will decrease (C) will remain same (D) may increase or decrease...
October 8, 2011

Accounts
The following is the Trial Balance of a trader as at 31st December, 2001: Debit Balances Rs. Credit Balances Rs. Stock (1-1-2001) Sales returns Purchases Freight and carriage Rate, Rent etc. Salaries and wages Sundry debtors Bank Interest Printing and advertisement Cash at ...
October 16, 2010

geometry
The sies of a triangle are 9cm, 12 cm and 15cm. Find the lenght of the perpendicular drawn to the side which is 15 cm.
September 4, 2010

chemistry
what is the chemical formula of dihydrogen oxide
June 1, 2008

math
tan/1-cot +cot/1-tan =1+sec cosec
May 2, 2008

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