Direct variations (in mathematical form).

State Newton's universal law of gravitation. Express it in mathematical form.

State Bohr second postulate for atomic model. Express it in its mathematical form.

All dissimilarities of characters between members of same species are called variations. The heritable variations form the 'raw material' for evolution.

State and explain first law of thermodynamics.Give its mathematical form.

(a) State Pauli's exclusion principle (b) State Heisenberg's uncertaninty principe. Give its mathematical form.

Direct variations if two quantities are linked in such a way that an increase in one quantity leads to a corresponding increase in the other and vice - versa then such a variation is called a direct variable.

Compare the variations in alternating current and direct current using graphs.

The scientists who put calculus in mathematical form are _______ and _______.