Consider the n = 10 shell
(a) What is the largest value of the angular momentum quantum number, ?, in this shell?
(b) How many electrons can be placed in this shell?
(a) 9 (b) 200
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How do scientists estimate the age of the Solar System?
A. They measure the heat content of the planets. B. They measure the ratios of radioactive elements in rocks. C. They count the number of craters on the Moon and Mercury. D. They compare the weathering of rocks on Earth with lunar rocks. E. None of these choices are correct.
It took two centuries for the Copernican model to replaced the Ptolemaic model because
A) in Copernicus' time, there were no telescopes. B) the Church wouldn't let anyone talk about Copernicus' model for 200 years. C) there was no scientific evidence to support either model until Galileo made his observations. D) the Ptolemaic model was simpler and more aesthetically pleasing. E) the Copernican model required complicated new terms to explain it correctly.
Induced electric and magnetic fields result in
A) electromagnetic waves. B) stronger electric or magnetic fields. C) higher voltages produced by Faraday induction. D) all of the above E) none of the above
Georgia moves an unattached piece of wire back and forth over a magnet. Which best explains what will happen?
A. a current will be induced because the wire moves through a magnetic field. B. a current will not be induced because the wire moves through a magnetic field. C. a current will be induced because the wire is not part of a closed circuit. D. a current will not be induced because the wire is not part of a closed circuit.