The diameter of one kind of pollen is about 35 microns, and the diameter of this kind of pollen is about 10 microns______ Rice
35 μ M = 35 × 10-6 M = 3.5 × 10-5 M
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- 1. The diameter of a certain kind of pollen is about 40 microns. How many pollen grains can be connected up to 1 meter?
- 2. The cell diameter of higher animals and plants is 20 to 30 μ m, 1 μ M = 10 ^ - 6 m, which is equivalent to () to () m in scientific notation
- 3. The average distance between the earth and the sun is 149.6 million kilometers______ It is necessary to keep one decimal place with "rounding method"______ 100 million kilometers
- 4. The distance between the earth and the sun is 149.6 million kilometers, and the average distance between the earth and the moon is 384400 kilometers. How many times is the distance between the sun and the earth
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- 6. The stack of books in a library is about 7000 meters, one millionth of which is expressed as meters by scientific counting
- 7. What's 75 percent in scientific notation
- 8. 1854.79 billion yuan = billion yuan = billion yuan in scientific notation
- 9. 2.175 billion is represented by scientific counting
- 10. 75, expressed as () emergency
- 11. A kind of pollen has a diameter of 20 microns, which is equivalent to -- by scientific notation
- 12. The diameter of a plant cell is 0.00000275 m, which is expressed as______ Rice
- 13. The diameter of influenza virus is 0.00000008 m, which is expressed as______ m.
- 14. The diameter of a bacterium is 0.000015m, which is expressed as______ Rice
- 15. The diameter of a nanoparticle is 0.000 & nbsp; 000 & nbsp; 035m, which is expressed as ⊙ by scientific notation___ Rice
- 16. Expressed by scientific counting method: 20041003=
- 17. Expressed by scientific counting method - 13500000
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- 20. It is known that the diameter of a certain pollen is 25 μ m, 1 μ M = 10-6 cubic meters. How many pollen can be arranged into 1 meter