Who was burned alive, for telling that the sun is the centre of our solar system?

How old is our solar system?

The largest planet of solar system is

Calculate centre of mass of the system

The torque on a planet about the centre of sun is

Two unequal masses are tied together with a cord with a compressed spring in between. The cord is burned. Which of the following energies is conserved for the system?

If accleration due to gravity on the surface of earth is 10ms^(-2) and let acceleration due to gravitational acceleration at surface of another planet of our solar system be 5ms^(-2) An astronaut weighing 50kg on earth goes to this planet in spaceship with a constant velcity The weight of the astronaut with time of fiight is roughly given by .

Which of the following graphs represents the motion of the planet moving about the Sun. T is the periode of revolution and r is the average distance (from centre to centre) between the sun and the planet

A planet of mass m_(1) revolves round the sun of mass m_(2) . The distance between the sun the planet is r . Considering the motion of the sun find the total energy of the system assuming the orbits to be circular.

In Rutherford's nuclear model of the atom, the nucleus (radius about 10^(-15)m ) is analogous to the sun about which the electron moves in orbit (radius about 10^(-10)m ) like the earth orbits around the sun. If the dimensions of the solar system had the same proportions as those of the atom, would the earth be closer to or further away form the sun than actually it is ? The radius of earth's orbit is about is 1.5xx10^(11)m . The radius of the sun is taken as 7xx10^8m .

$ solar system has 15 planets. ! Earth is the major member of the solar system