shubhamsrg
 Name:
 shubham raj
 School:
 About:
 B.E. Ist year student, pursuing CSE
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Questions Asked

shubhamsrg:
How fast should one run on water so as to not sink?
What parameters decide this ?
 updated 9 months ago
 26 replies
 5 Medals
Mathematics

shubhamsrg:
Probability ques (easy yet worth trying)
In an urn, there are several colored balls, with equal numbers of each color. If we were to add …
 updated one year ago
 26 replies
 6 Medals
Mathematics

shubhamsrg:
In triangle ABC, ∠ACB=90∘. D and E are points on AB such that AD=DE=EB. If there exists θ such that CD=5cosθ and CE=5sinθ, what is AB^2?
 updated one year ago
 10 replies
 1 Medal
Mathematics

shubhamsrg:
Consider a cylinder with radius = 5 cm and height = 20 cm. The cylinder is placed vertically on the ground and water is filled in to a heigh…
 updated one year ago
 38 replies
 2 Medals
Mathematics

shubhamsrg:
What should be the next number
101 ,111011 , 311021,1321101211, _____________…
 updated one year ago
 52 replies
 No Medals Yet
Mathematics

shubhamsrg:
sum of first natural nos. = n(n+1)/2
my question is that is it just a coincidence that this sum is also equal to C(n+1 ,2) ? or is ther…
 updated one year ago
 54 replies
 11 Medals
Mathematics

shubhamsrg:
the bob of pendulum is a small sphere, filled with water.
now a small hole is made into the pendulum at the bottom because of which, water …
 updated one year ago
 14 replies
 No Medals Yet
Mathematics

shubhamsrg:
A cube of side x is moving with velocity u on a horizontal smooth plane. There is a ridge at O.
find angular speed of the cube after it hit…
 updated one year ago
 16 replies
 2 Medals
Mathematics

shubhamsrg:
a chain of uniform mass m and length l is placed on a horizontal table such that 1/4th of its length hangs below the table. Find the work do…
 updated one year ago
 6 replies
 1 Medal
Mathematics

shubhamsrg:
law of conservation of sum of digits is what i call it..
how do i prove it but ?
…
 updated one year ago
 23 replies
 6 Medals
Mathematics

shubhamsrg:
3 identical blocks of length l are placed over one another as shown.
find max value of x so that system remains in eqbm.
…
 updated one year ago
 24 replies
 1 Medal
Mathematics

shubhamsrg:
force on the hinge when rod is just released = ?
 updated one year ago
 41 replies
 2 Medals
Mathematics

shubhamsrg:
if the world around you was not a 3d world but was a 2d world, what would a circle appear like ?
 updated one year ago
 23 replies
 3 Medals
Mathematics

shubhamsrg:
coefficient of friction between the 2 blocks is U and the surface below the bigger block is smooth .
Find the min and max force that can be…
 updated one year ago
 13 replies
 2 Medals
Mathematics

shubhamsrg:
How large must F be in order to give the block of mass 0.7 kg an accn of 0.3 m/sec^2. The coefficient of friction between the two blocks and…
 updated one year ago
 55 replies
 4 Medals
Mathematics

shubhamsrg:
a block of mass 1kg is placed on a plank of mass 2kg, length of plank = 2m. Coefficient of friction between plank and block is 0.5 and the r…
 updated one year ago
 44 replies
 1 Medal
Mathematics

shubhamsrg:
TUTORIAL :
on how to solve a 3 degree eqn in x using trigonometry .. i learnt this method quite some time ago and maybe everyone should give…
 updated one year ago
 52 replies
 13 Medals
Mathematics

shubhamsrg:
a sealed cylindrical drum of radius r is filled with 9% of water. Now if the drum is tilted to rest on its side, show that the fraction of t…
 updated one year ago
 28 replies
 3 Medals
Mathematics

shubhamsrg:
reason for dispersion of light using fermat principle..
 updated one year ago
 13 replies
 1 Medal
Mathematics

shubhamsrg:
ABC is a triangle where CD is the angle bisector .
prove that
geometric mean of AC and BC is greater than CD
 updated one year ago
 41 replies
 5 Medals
Mathematics

shubhamsrg:
ABC is a triangle inscribed in a cirlce. AD and AE are straight lines drawn from A to the base BC parallel to the tangents at B and C respec…
 updated one year ago
 32 replies
 2 Medals
Mathematics

shubhamsrg:
what is the ratio of area of a traingle ABC to the area of the triangle whose sides are equal to the medians of ABC ?
 updated one year ago
 71 replies
 3 Medals
Mathematics

shubhamsrg:
in the figure,
BD = CD
…
 updated one year ago
 14 replies
 3 Medals
Mathematics

shubhamsrg:
how to prove :
sin^3 x + cos ^3 x <= 1
 updated one year ago
 9 replies
 1 Medal
Mathematics

shubhamsrg:
geometry + similarity question i'd guess..
PQRS is a //gm…
 updated one year ago
 45 replies
 3 Medals
Mathematics

shubhamsrg:
the minimum value of
x^8 8x^6 + 19x^4 12x^3 +14x^2 8x +9 = ?
 updated one year ago
 35 replies
 1 Medal
Mathematics

shubhamsrg:
limit question
x>infinity
…
 updated one year ago
 4 replies
 1 Medal
Mathematics

shubhamsrg:
infinite summation :
1 + (1+2)/2! + (1+2+3)/3! ........
 updated one year ago
 4 replies
 2 Medals
Mathematics

shubhamsrg:
infinite summation :
1 + (1/3) + (1.3 / 3.6) + (1.3.5 / 3.6.9) + (1.3.5.7 / 3.6.9.12) ........ = ?
 updated one year ago
 20 replies
 3 Medals
Mathematics

shubhamsrg:
Binomial question:
simplify :
C(50,0) * C(50,1) + C(50,1) * C(50,2) .....+C(50,49) * C(50,50)
…
 updated one year ago
 18 replies
 1 Medal
Mathematics
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