anuttarasammyak's latest activity

Deleted

Good! For simplicity and convenience, let’s temporarily choose ##t=0##. At ##t=0## we can use the total ##s## to see that ##y=0##. So...

@davLev Why we observe more electrons than positrons would become your question then.

The formula for the 2nd and the 3rd case is written as $$\frac{a^2+s^2-as(\sin\theta + \cos\theta)}{2 \sin\theta \cos\theta}$$ which is...

I worked out the overlap of the two squares as a function of angle. Given ##a## is the half edge length of the original square and...

The answers for the first case and the 4th case are symmetric for exchange of s and a. May we expect the same for the 2nd and the 3rd...

The electromagnetic repulsive force is an obstacle that must be overcome to achieve nuclear fusion. This condition is satisfied in the...

Yes. Ref. https://www.feynmanlectures.caltech.edu/II_01.html

@gen x Let us see the case of moving-spinning disk as sketched below. Orbit of O is a line. The disk is rotating around O with...

If I did it right, for 1 Bq radioactivity we should have ##5 \times 10^7 ## kg Tellurium sample, which is more or less weight of Titanic.

FYI Landau-Lifsitz's Mechanics explains in section 31 Then they investigate the case where O' which is distance a from O is taken. I...

A sample made of a lot of radioactive nuclei started to decay immediately after it was generated.

Agreed. Now the larger square is the 1m square. The overlap depends on the relative orientation until ##s## shrinks to...

$$s=\sqrt{2}/2$$is the minimum value satisfying it though not larger any more. And also $$s=\frac{1}{2\sqrt{2}} $$is the maximum.

Suppose the object is rigid. Fixing the positions of any three points on the object is sufficient to construct a co-moving coordinate...