Complete the following sentences. a. The motion of the particles is a model of. . b. The movement of particles from one chamber to another is a model of. . c. When the average motion of the particles is the same in both chambers, this is a model of .

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

If steel is more dense that lake water, why can a boat float

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?