1nm= cm

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• 1. How many centimeters is 5 decimeter DM?
• 2. How many cm is one foot? How many people in the ancient NBA say that seven feet is equal to one hundred and twenty-three feet in length,
• 3. How much m is 1nm?
• 4. How many meters is 1 nm
• 5. Example: 17km = 17 times 10 to the third power = 1.7 times 10 to the fourth power=__________ =___________ um
• 6. The earth is a sphere with a radius of 6.4 times 10 to the power of 3 km. Beijing latitude is 40. The two objects at the equator and Beijing move with the earth in a circle with an angle and a line Use radian value to express, don't search a large number of mistakes on the Internet Finding the linear velocity and angular velocity of two objects
• 7. How many milliliters is the cubic power of 1cm There are also various unit conversions related to it
• 8. 1dm ^ - 3 =? Cm3 is DM negative cubic,
• 9. P = f / S = 6N / 4 × 10 negative third power M & # 178; = 1.5 × 10 third power PA how can we get 1.5 × 10 third power pa by this formula for pressure
• 10. When the atmospheric pressure is 1.013 × 105Pa, the boiling point of liquid nitrogen is - 195.8 ℃, the boiling point of liquid oxygen is - 183 ℃, the boiling point of liquid helium is - 219 ℃, and the boiling point of liquid carbon dioxide is - 78.44 ℃. When the liquid air is separated, the sequence of the above gases separated with the increase of temperature is () A. Nitrogen, oxygen, helium, carbon dioxide B. helium, nitrogen, oxygen, carbon dioxide C. carbon dioxide, oxygen, helium, nitrogen D. helium, carbon dioxide, oxygen, helium
• 11. How many meters is 1nm =? M 1nm? How many meters is a nanometer,
• 12. 1Odm＝（）m 2m6dm＝（）dm 230Cm＝（）dm 100mm＝（）dm 10m17cm 1Odm＝（）m 2m6dm＝（）dm 230Cm＝（）dm 100mm＝（）dm 10m17cm＝（）cm
• 13. Conversion from km to NM
• 14. When will man fly out of the solar system ① It has been more than 40 years since the Soviet Union launched the first man-made satellite in 1975. During this period, human beings broke away from the earth's gravity, flew out of the global village, and landed on the moon. However, human beings always feel that the pace of flying is too slow, and always anxiously look forward to when they can fly out of the solar system, Entering the space age? The Space Angel "pioneer" and "traveler" probes released by human beings in the 1970s have been flying out of the solar system for 20 to 30 years, trudging 6 billion kilometers and flying over the farthest orbit of Pluto. But has it ever flown out of the solar system? ② In fact, the boundary of the solar system is very broad. If the solar wind is used to calculate the range, the radius can reach 13.5-18 billion kilometers; if the solar gravity is used to calculate the range, the radius can reach 15 trillion kilometers, about 1.5 light years. It can be seen that the above-mentioned flying probe is far from the boundary of the solar system, The solar system is just a drop in the ocean. It's easy to cross a small river. To cross the ocean, we must have sufficient conditions. At present, human's understanding of the universe and space technology are far from enough for aerospace, and they are far from meeting the requirements of flying out of the solar system ③ So "pioneer" and "Voyager" probes can only be regarded as "space flight" out of the earth's atmosphere, far from "space flight" out of the solar system ④ For the space flight out of the solar system, it's just a piece of white paper, At present, one of people's visions is to develop space power sources with small mass, long operation time and high energy, such as electric rocket, laser rocket, nuclear rocket, microwave powered spacecraft, laser powered spacecraft, antimatter propulsion starship, etc, Flying at the speed of hundreds of kilometers per second, thousands of kilometers, tens of thousands of kilometers or even close to the speed of light, people will be able to fly out of the solar system and make interstellar voyages to other stellar systems, the Milky way or distant galaxies in their lifetime ⑤ When we can fly out of the solar system depends on the development level of human intelligence and science and technology on earth. Work hard, maybe in decades or hundreds of years, the dream of human yearning for interstellar navigation will become a reality 1. In what order is this article written? Extract the words that can reflect this order from the article. 2. In connection with the content of the full text, talk about the expression effect of the word "drop in the ocean" in the second paragraph. 3. What is the role of the third natural paragraph in the structure of the full text?
• 15. At present, human sky detectors can fly as far away as? A. Earth Moon system B. solar system C. Galaxy D. total galaxy
• 16. When did humans fly out of the solar system When did humans fly out of the solar system ① It has been more than 40 years since the Soviet Union launched the first man-made satellite in 1975. During this period, human beings broke away from the earth's gravity, flew out of the global village, and landed on the moon. However, human beings always feel that the pace of flying is too slow, and always anxiously look forward to when they can fly out of the solar system, Entering the space age? The Space Angel "pioneer" and "traveler" probes released by human beings in the 1970s have been flying out of the solar system for 20 to 30 years, trudging 6 billion kilometers and flying over the farthest orbit of Pluto. But has it ever flown out of the solar system? ② In fact, the boundary of the solar system is very broad. If the solar wind is used to calculate the range, the radius can reach 13.5-18 billion kilometers; if the solar gravity is used to calculate the range, the radius can reach 15 trillion kilometers, about 1.5 light years. It can be seen that the above-mentioned flying probe is far from the boundary of the solar system, The solar system is just a drop in the ocean. It's easy to cross a small river. To cross the ocean, we must have sufficient conditions. At present, human's understanding of the universe and space technology are far from enough for aerospace, and they are far from meeting the requirements of flying out of the solar system ③ So "pioneer" and "Voyager" probes can only be regarded as "space flight" out of the earth's atmosphere, far from "space flight" out of the solar system ④ For the space flight out of the solar system, it's just a piece of white paper, At present, one of people's visions is to develop space power sources with small mass, long operation time and high energy, such as electric rocket, laser rocket, nuclear rocket, microwave powered spacecraft, laser powered spacecraft, antimatter propulsion starship, etc, Flying at the speed of hundreds of kilometers per second, thousands of kilometers, tens of thousands of kilometers or even close to the speed of light, people will be able to fly out of the solar system and make interstellar voyages to other stellar systems, the Milky way or distant galaxies in their lifetime ⑤ When we can fly out of the solar system depends on the development level of human intelligence and science and technology on earth. Work hard, maybe in decades or hundreds of years, the dream of human yearning for interstellar navigation will become a reality 1. What is the main content of this article? 2. What is the way to explain the sentences underlined in the third natural paragraph
• 17. How many light-years is the sun from the center of the galaxy?
• 18. What is the distance between the sun and the center of the galaxy
• 19. The size of the sun is 1.3 million times that of the earth, the diameter of the earth is about 1 * 10 to the seventh power, and the width of the Milky way is about 100000 light-years The calculation shows that the band sample is only a tiny member of the galaxy
• 20. It is known that the diameter of the Milky way is 80000 light-years. Now the fastest spacecraft of mankind is the space shuttle. Its speed is 8000 meters per second How many seconds does it take to fly from one end to the other?