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If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false
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Which of the following is a characteristic shared by both electron and light microscopes? a. they both employ the use of objective lenses. b. both microscopes require an internal camera to visualize the specimen. c. both microscopes have a resolving power of 0.01 nm. d. they both utilize white light to magnify the specimen.
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Physics, 22.06.2019 21:00
What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.
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Physics, 22.06.2019 21:30
Complete the sentence to describe the law of conservation of energy. the law of conservation of energy states that energy cannot be created
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Biểu diễn các lực sau lên hình vẽ a. Trọng lực tác dụng lên quả cam có khối lượng 250g với tỉ xích l...
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