Which terms describe space objects that are small chunks of rock and debris that are smaller than 1 km? SELECT 3 OPTIONS

1. meteoroids
2. asteroids
3. meteors
4. meteorites
5. comets

I know that this isn't physics but there was no space option.

The gravitational attraction between two objects will if one object acquires more mass .

When fat comes in contact with sodium hydroxide, it produces soap and glycerin. determine whether this is a physical change or a chemical change. explain your answer

Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?