Physics laws

Question 1

Archimedes’ Principle

Answer 1

The upthrust exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces

Question 2

Chandrasekhar’s limit

Answer 2

The mass of a star’s core beneath which the electron degeneracy pressure is sufficient to prevent gravitational collapse. 1.44 solar masses

Question 3

Conservation of charge

Answer 3

Electric charge can neither be created nor destroyed - the total charge in any interaction must be the same before and after the interaction

Question 4

Cosmological principle

Answer 4

The assumption that, when viewed on a large enough scale, the Universe is homogeneous and isotropic, and the laws of physics are universal

Question 5

Coulomb’s law

Answer 5

Any two point charges exert an electrostatic (electrical) force on each other that is directly proportional to the product of their charges and inversely proportional to the square of their separation