Why was the copernican model a controversial proposition

I believe this question refers to the extremely charged nature of his model. The world in his day was almost completely controlled by the Catholic Church. His heliocentric model suggested that the earth was not, indeed, the centeer of the universe, and Catholic officials and clergy took this to be a dirrect attack on the priveleged place they believed man held in God's plan.

a small object of mass 3.66 g and charge -17.6 µc is suspended motionless above the ground when immersed in a uniform electric field perpendicular to the ground. what are the magnitude and direction of the electric field?