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Physics
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sku
  • Member for 7 years, 11 months
  • Last seen more than a week ago
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Top posts
51
Why doesn't the nuclear fusion in a star make it explode?
Apr 5, 2020
11
What happens when the universe runs out of fuel?
May 12, 2022
1
Maximizing proper time with parabolic trajectory in uniform gravitational field
Apr 29
1
"If an object was dropped into water from two different heights, so that it doesn't hit the bottom, would the terminal velocity be different?"
May 31, 2018
0
On work done by motion of objects in elliptic orbits [duplicate]
Apr 2, 2021
0
How does spacetime curvature explain why it is easier to go downhill than uphill?
Feb 19, 2023
0
What forces are acting on a massless pulley "cylinder"?
Mar 11, 2018
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10
An interesting finding on twin primes
9
show that $(n+1)(n+2)...(2n)$ is divisible by $2^n$ but not by $2^{n+1}$
8
Prove $a^2 + b^2 + c^2 + ab + bc +ca \ge 6$ given $a+b+c = 3$ for $a,b,c$ non-negative real.
8
A gedanken on being able to navigate back to Earth
7
Conjecture: $\sum\limits_{k=1}^nk^m=S_3(n)\times\frac{P_{m-3}(n)}{N_m}$ for odd $m>1 \ ;\ =S_2(n)\times\frac{P_{m-2}'(n)}{N_m}$ for even $m$.