Which statements best describe magnets? check all that apply.
1. magnets act at a distance
2. magnets have two poles
3. all materials are attracted to a magnet
4. magnets have a magnetic field around them
5. materials that are attracted to a magnet contain iron, cobalt, or nickel
6. magnets must touch other materials to attract or repel those materials

Following are the conditions that describe magnets:

1. Magnets act at a distance. (Yes, Magnets act at a distance. Touching the material is not a requirement)

2. Magnets have two poles. (Even if you break a magnet, each piece will have two poles)

4. Magnets have a magnetic field around them. (The magnetic field weakens as the distance increases)

5. Materials that are attracted to a magnet contain iron, cobalt, or nickel.

d) physical means can be used to separate the components of air.

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer