It has been proposed that a spaceship might be propelled in the solar system by radiation pressure, using a large sail made of foil. how large must the surface area of the sail be if the radiation force is to be equal in magnitude to the sun's gravitational attraction? assume that the mass of the ship + sail is 1500kg, that the sail is perfectly reflecting, and that the sail is oriented perpendicular to the sun's rays. see appendix c in your book for needed data.

Any color picture tube and electric field exerts a net force of magnitude 1.68x 10^-13 n on an electron the rest mass of an electron is 9.11 x 10^-13 what is the electron acceleration?

The radius of an atom is closest in size to a

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.