If an asteroid makes a uniform circular motion around the sun and its orbit radius is four times the radius of the earth's revolution, then the speed of the asteroid is the speed of the earth How many times of the rate
zero point five
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- 1. If the radius of an asteroid's uniform circular motion around the sun is four times the radius of the earth's revolution, then the cycle of the asteroid's motion is A4 B.6 c.8 d.9
- 2. If there is a planet whose average distance from the sun is 8 times of that from the earth to the sun, then the cycle of the planet around the sun is What is the revolution period of the earth
- 3. Why is the earth's orbit around the sun elliptical? Elder brothers and sisters, if you tell me, I will always be happy! This problem has been haunting me for several years. If you don't know, you will have to go crazy, I always wonder if there are some massive objects outside the solar system that have an impact on the revolution of the earth. If so, there may be a big black hole near the solar system. Do you agree
- 4. Why is the moon's orbit around the earth elliptical?
- 5. What is the orbit plane of revolution =The three-dimensional sense is not very good How can there be an orbital plane for revolution? Isn't the orbit a curve
- 6. The orbit of the moon around the earth is close to a circle, so we can find the mass of the earth The orbit of the moon around the earth is close to a circle. Its orbit radius is 384000km, and its revolution period is 2360000s. We can find the mass of the earth
- 7. What is the revolution period of the moon to the earth and the rotation period of the moon What is the special relationship between them? What month does the earth see the moon like the first quarter moon?
- 8. See the supplement to the question concerning the earth's revolution and the moon's revolution Suppose that the earth and the moon start at a certain time. How long or how many times does the earth revolve around the sun, and both the earth and the moon revolve back almost to the original starting position?
- 9. 204 times the 24th power of 10, the amount of electronic matter in each H2SO4 molecule is 1
- 10. How to form a round light spot in the shade of a tree in the sun is explored. It is found that the light spot is formed by the sun through a small hole. It is also found that the image has size and which factors are related to the size of the image eleven
- 11. The orbit of a planet and the earth around the sun can be regarded as a circle. Every n years, the planet will move to the extension line of the sun earth line. The ratio of the radius of the planet and the earth is (n / n-1) ^ 2 / 3 Why can't the earth rotate one more circle, two or three more than the planet, as long as it's an integral circle
- 12. Electromagnetic wave is used to transmit signal between mobile phones, and the propagation speed of the signal is______ M / s, the electromagnetic wave length of a radio station is 3M, then its frequency is______ MHz.
- 13. How do electromagnetic waves transmit signals? Does the electromagnetic gravity absorb the signal? What material is the signal sometimes? Ha ha, illiterate
- 14. A planet is 1.3x10 km away from the earth to the sixth power. After the laser signal is sent from the earth to the planet, how many seconds can it receive the return signal?
- 15. It takes s for a transmitter on the earth to transmit electromagnetic waves to the moon The known distance between the earth and the moon is 3.84 × 10 ^ 5km ..
- 16. How to measure the distance between the earth and the sun
- 17. How far is Neptune from the earth? How far is Neptune from the earth? It's from the earth, not from the sun.
- 18. How far is mercury / Venus / earth / Mars / Jupiter / Saturn / Uranus / Neptune from the sun? Uncles, aunts, brothers and sisters, help me! I urgently need the distance between mercury, Venus, earth, Mars, Jupiter, Saturn, Uranus, Neptune and the sun! Please help me!
- 19. The distance between the sun and the earth
- 20. How to calculate the distance between the earth and the sun?