Answer:
Explanation:
The buoyant force F is equal to the weight of the displaced fluid. The weight of the displaced fluid is 
, where 
is the mass of the displaced fluid. The mass of the displaced fluid is 
, where 
is the density of the fluid and 
is the displaced volume, which is equal to the submerged volume of the cilinder 
.
Putting all together we have:
Energy and momentum are always conserved. Kinetic energy is not conserved in an inelastic collision though. And that is because it is converted to another form of energy
1. it is difficult to search for it . Because infrared rays will never penetrate through earth atmosphere.
2. we are unaware of how it looks like and we only know it is red and will glow . A damaged star also looks like this.
3. Dust also makes is hard to detect Dyson spheres . So we will get confused between Dyson sphere and a star surrounded by dust.
A group of cells together
