The table below shows two conclusions about atoms based on experiments by Rutherford and Bohr. Name of scientist Experimental Process Conclusion about atoms Rutherford Fire radioactive particles through thin gold foils and detect them on The nucleus is the center of the atom with electrons revolving around it in orbits a screen Bohr Check the spinning motion of electrons Electrons are found outside the nucleus of the atom at various levels called shells, arranged like layers of an onion Which of these statements best explains why Rutherford and Bohr visualized the atom differently? (2 points) O They studied atoms of different elements. O They had different focuses in their experimental process. O They did not believe in agreeing on a single model of the atom. O They did not have instruments to take accurate measurements.

In the future, people will only enjoy one sport: electrodisc. in this sport, you gain points when you cause metallic discs hovering on a field to exchange charge. you are an electrodisc player playing the popular four disc variant. the disks have charges of qa = −8.0 µc, qb = −2.0 µc, qc = +5.0 µc, and qd = +12.0 µc. (1) you bring two disks together and then separate them. you measure the resulting charge of these two disks and find that it is +5.0 µc per disk. which two disks did you bring together? (a) a and b (b) a and c (c)a and d (d)b and c(e) b and d (f) c and d. (2) you bring three disks together and then separate them. you measure the resulting charge of these three disks and find that it is +3.0 µc per disk. which three disks did you bring together? a, b, and c (a) a, b, and d (c) a, c, and d (d) b, c, and d. (3) given the resulting charge of each disk measured in (b) is +3.0 µc, how many electrons would you need to add to a disk of this charge to electrically neutralize it? electrons