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Top Questions
32
votes
What roles do neutrons play in an atom?
physical-chemistry
atoms
neutrons
asked Jan 19 '17 at 4:53
chemistry.stackexchange.com
31
votes
Is every parallelogram a rectangle ??
geometry
triangle
area
fake-proofs
quadrilateral
asked Dec 23 '16 at 11:52
math.stackexchange.com
23
votes
Why are light rays able to cross each other?
visible-light
image-processing
asked Jan 18 '17 at 15:51
physics.stackexchange.com
12
votes
How the position of this black hole known?
black-hole
observation
positional-astronomy
asked Jan 2 '17 at 15:50
astronomy.stackexchange.com
8
votes
Why can't we half-close our eyes?
physiology
eyes
human-eye
asked Jan 16 '17 at 8:24
biology.stackexchange.com
7
votes
Do Stars in Galaxies also move in elliptical orbits?
orbit
galaxy
asked Dec 31 '16 at 17:13
astronomy.stackexchange.com
7
votes
Can Earth have a ring?
gravity
earth
planetary-ring
near-earth-object
asked Jan 13 '17 at 16:50
astronomy.stackexchange.com
6
votes
Why we are not able to throw further with two hands than with one hand?
newtonian-mechanics
forces
projectile
biophysics
asked Feb 27 '17 at 16:15
physics.stackexchange.com
5
votes
Why the comets can cross the orbits of planets?
planet
orbit
gravity
comets
asked Jan 7 '17 at 5:04
astronomy.stackexchange.com
5
votes
Can you touch something which is massless?
visible-light
mass
refraction
asked Jan 5 '17 at 3:03
physics.stackexchange.com
Top Answers
10
Why is the solution to $x-\sqrt 4=0$ not $x=\pm 2$?
math.stackexchange.com
10
Find the sum of first $n$ terms of the series: $\frac{1}{1\times2}+\frac{1}{2\times3}+\frac{1}{3\times4}+\cdots +\frac{1}{n\times(n+1)}$
math.stackexchange.com
8
Proving area of triangle formed at parallelogram midpoint is 1/4 of the parallelogram?
math.stackexchange.com
7
How do I solve quadratic equations when the coefficients are complex and real?
math.stackexchange.com
7
Is the Charge on proton is $3.2\times10^{-19}$ greater than that of charge on electron?
physics.stackexchange.com
6
prove that all lines $ax+y=b$ such that coefficients $a, 1, b$ constitute arithmetic sequence have one common point
math.stackexchange.com
6
Show that $e^n>\frac{(n+1)^n}{n!}$ without using induction.
math.stackexchange.com
6
What must be the simplest proof of the sum of first $n$ natural numbers?
math.stackexchange.com
5
Finding the unknown area.
math.stackexchange.com
5
Solve the equation $5x^2+5y^2-8xy-2x-4y+5=0$
math.stackexchange.com
5
Show that $ f(x)=x^{1000}-x^{500}+x^{100}+x+1=0 $ has no rational roots.
math.stackexchange.com
5
Find sum of numbers from $1-100$ which are not divisible by $3$ and$ 7$
math.stackexchange.com
5
The sum of digits in a 2-digit number
math.stackexchange.com
5
Determine where a point lies in relation to a circle, is my answer right?
math.stackexchange.com
5
What is the role of pillars in bridges?
physics.stackexchange.com
5
Is Darkness Faster Than Light?
astronomy.stackexchange.com
5
Converting Polynomials into Binary form
cs.stackexchange.com
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