Oppositely charged objects attract each other. This attraction holds electrons in atoms and holds atoms to one another in many compounds. However, ernest rutherfordâs model of the atom failed to explain why electrons were not pulled into the atomic nucleus by this attraction. What change to the atomic model helped solve the problem seen in rutherfordâs model?bohrâs work with atomic spectra led him to say that the electrons were limited to existing in certain energy levels, like standing on the rungs of a ladder. Bohrâs work with cathode rays led him to say that the electrons were located within the mass of positive material, like plums in a pudding. Thomsonâs work with cathode rays led him to say that the electrons were located within the mass of positive material, like plums in a pudding. Thomsonâs work with atomic spectra led him to say that the electrons were limited to existing in certain energy levels, like standing on the rungs of a ladder.
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SAT, 24.06.2019 19:30, ShahinF7536
Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within an inch of the tailpipe mouth. technician a says that if the paper is vibrating due to a "puffing" output from the tailpipe, this signals a smoothly running engine. technician b says that if the paper is being drawn toward the tailpipe, this could indicate burned exhaust valves. who is correct? a. technician b b. both technicians a and b c. technician a d. neither technicians a or b
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SAT, 25.06.2019 07:00, queenkimm26
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