Today, with highly developed science and technology, people still like moon culture because: This is the problem of homework
It's hard to say that everyone has different opinions. Maybe it's because the moon has its ups and downs, and people have the same things~
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- 1. Why do people still like moon culture in today's advanced technology?
- 2. How many nanometers is an astronomical unit
- 3. What is an astronomical unit
- 4. What unit of length is 1 ' What is the unit of length if there is a prime at the top right of the number? If there is a prime at the top right of the number, what is the unit of length? It's a unit of length in clothing. Does it mean one foot or one inch?
- 5. What does "length" stand for in the unit of length? 1/2” high by 1” long
- 6. For the ruler with a length of 9cm, three scale lines are determined on the ruler, so that the ruler can measure all the whole cm line segments from 1 to 9cm at one time. Three schemes are designed
- 7. A ruler has only four scales (1, 4, 5, 11), but it can measure all the whole centimeter length of 1-13cm in two places. How to use this ruler, Measure the length of 1-13 cm?
- 8. As shown in the figure, there is a 9 cm long ruler. Can you just carve 3 scale marks on it, so that you can measure all the whole centimeter length from 1 cm to 9 cm at one time with this ruler? If you can, please draw a sketch of all the different engraving methods; if not, explain the reason
- 9. There is a 13 cm ruler. How many lines do you need to carve on it so that the ruler can measure all the whole centimeter's length from 1 to 13 cm at a time? Where to carve it?
- 10. How does a ruler inserted obliquely into the water change from the surface of the water? When the ruler is inserted obliquely into the water, the scale mark () It is possible for a to become dense, B to become sparse and C to remain unchanged Please answer in detail
- 11. How long does it take for the fastest aircraft in a light year?
- 12. How far is the distance between the earth and Mars? How long does it take human beings to get there by spaceship? How long will it take for a human Mars probe to reach the surface of Mars?
- 13. How long does it take to see an object one light year away Suppose an object is one light year away from me. How long does it take for me to see the object with a telescope and how to calculate the time? Please answer in detail. Thank you first
- 14. A light year is the distance at which light travels
- 15. The distance between Altair and Vega and the earth? How far is Altair from the earth? How far is Vega from the earth? How far is Altair from vega? Are they brighter than the sun?
- 16. How many light years does it take for the light of the star nearest to the sun to reach the earth
- 17. Outside the sun, the nearest star to the earth is? 4 light years, 40 light years, more than 4 billion kilometers, more than 400 million kilometers
- 18. Scientists also told us that Vega is about 26 light-years away from the earth, and Altair is 16 light-years away from us
- 19. The known distance of a somersault is 3.4 × 10 km Ask the monkey king how many somersaults to turn to, known to turn a somersault to take a second, ask him how many years to turn to
- 20. Why is the position of Polaris almost the same from earth What kind of stars does Polaris belong to Doesn't Polaris move? The earth is moving