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Tính lực tương tác điện, lực hấp dẫn giữa electron và hạt nhân trong nguyên tử Hyđrô, biết khoảng cách giữa chúng là 5.10-9cm, khối lượng hạt nhân bằng 1836 lần khối lượng electron
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Asimply means that over time there was some sort of change.
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Ais not a compound machine. a. bolt b. shovel c. handcart (dolly) d. see-saw (teeter totter)
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You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?
Answers: 2
Tính lực tương tác điện, lực hấp dẫn giữa electron và hạt nhân trong nguyên tử Hyđrô, biết khoảng cá...
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