Physics Spl

Mostly. Understand the subject well and don't leave a bit from question banks. Don't blindly derive answers. Rather understand the conceptual and logical procedure for every bit you solve. That will help you answer enuf questions to score 80marks

App allows only text replies sadly. Derivation needs diagrams and mathematical equations. U can expect an answer here. Search on youtube for a proper video

According to Newton, Any two bodies having mass in this universe attract each other (mass1 attracts mass2 with a force and mass2 attracts mass1 with the same force) with a force. He named the phenomenon of attraction as gravitation and gave the 2 attractive forces a name, Gravitational force. The magnitude of these forces between 2 bodies is directly proportional to product of the two masses and inversely proportional to square of distance between the masses he proved. He calculated the constant of proportionality is 6.67 x 10^-11. It is denoted by 'G' and called as 'Universal Gravitational Constant'.
F=(G m1 m2)/r square

No. HCV is just a beginning. It helps u understand concepts in a better way. Cengage, Athiveer are very good books for both concept and problems from jee advanced point of view.

yessss you can

The branch of science concerned with the nature and properties of matter and energy. The subject matter of physics includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms.

MEC is normally pursued by those who wish to pursue B Com, CA or any Accountacy track. To pursue B Sc in Sciences, PCM or PCB is normally required.

C and Q are symbols designated in some text books for Electric Charge. C may indicate Coulombs which is the unit of Electric Charge. Electrical Current is agreed upon to be designated normally as I and its unit is Amperes(A). But that does not mean that you cannot use other letters to denote the parameter. You may choose your own letter or symbol, but must mention it in your answer.