The New Book of Knowledge, Volum 1Grolier Incorporated, 1989 - 21 sider An illustrated encyclopedia containing over 9000 articles on history, literature, art and music, geography, myths and legends, mathematics, science, hobbies, holidays and festivals, games, sports, crafts, medicine, law, government, industry, politics, and other topics. |
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Side 28
... charge much higher rates to their read- ers . In some cases the price would be so high that the average reader would not want to pay it , and the magazine or newspaper would go out of business . Without advertising , radio and ...
... charge much higher rates to their read- ers . In some cases the price would be so high that the average reader would not want to pay it , and the magazine or newspaper would go out of business . Without advertising , radio and ...
Side 474
... charged particles called protons . Negatively charged particles , called electrons , move in orbits around the nucleus . The positive charges of the protons exactly balance the negative charges of the electrons , so the atom is said to ...
... charged particles called protons . Negatively charged particles , called electrons , move in orbits around the nucleus . The positive charges of the protons exactly balance the negative charges of the electrons , so the atom is said to ...
Side 486
... charges ) ; the oxygen atom has 8. The nucleus of an aluminum atom has 13 protons ( positive charges ) and 14 neutrons ( no charge ) ; the oxygen atom has 8 of each . The sum of the particles in the nucleus gives the atomic weight ; the ...
... charges ) ; the oxygen atom has 8. The nucleus of an aluminum atom has 13 protons ( positive charges ) and 14 neutrons ( no charge ) ; the oxygen atom has 8 of each . The sum of the particles in the nucleus gives the atomic weight ; the ...
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