1.What is the mathematical relationship between magnetic force and distance between the two magnets?
2.What is the magnitude of the magnetic force between the two
magnets when they are 4 cm apart?
3.How far apart must the magnets be to experience a force of
0,05 N?​

Phase changes are chemical changes. true or false

Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?

22. the top of a cliff is located a distance h above the ground. at a distance h/2 there is a branch that juts out from the side of the cliff, and on this branch a bird's nest is located. two children throw stones at the nest with the same initial speed, one stone straight downward from the top of the cliff and the other stone straight upward from the ground. in the absence of air resistance, which stone hits the nest in the least amount of time?