It is known that the speed of light is 30 km / s. how far is the distance between the moon and the earth It's urgent to find out by 8 o'clock. Come on

You need to know the time from when the signal is sent to when it is received

It is known that the speed of light is 3000 meters per second. Now we use a radio telescope to send a beam of light from the earth to the moon. After 2.5 seconds, the light is reflected back to the earth by the moon, and the distance between the moon and the earth is calculated

3750 km

The distance between the earth and the moon, and the time for light to travel from the earth to the moon

The average distance is about 384000 km, and the one-way propagation time is 1.28 seconds

RELATED INFORMATIONS

1. Is the earth far from the moon or the sun? Oh, distance
2. How far is the sun and moon from our earth?
3. How many kilometers is the distance between the sun and the earth? How long does it take for sunlight to reach the earth? Don't be long,
4. What's the fastest speed of American spaceship? When can Chinese spaceship reach the speed of light?
5. How long did it take me to fly from the earth at the speed of light to return to the earth at the same time, Is the time around him almost stagnant? Does it not mean that the faster the relative object is, the slower the time passes? How many years have passed on the earth? If it is 2 years, what is the difference between my time and that on the earth?
6. Is it right that the speed is close to the speed of light and time slows down or stops? Time is just a concept. It is a unit of measurement of the regular change of matter. For example, year, year, and day. I don't understand that if we move at or near the speed of light, time will slow down or stop. The original meaning is: can the speed of light slow down the change of matter? What kind of trajectory is needed to produce such an effect? Is it linear motion or circular motion or rotation? Personal feeling: suppose there are two children just born when the speed of light train starts, one is on the train and the other is at the departure station. After 20 or 30 years, their life change characteristics should be the same (in short, the aging degree is the same), If the train returns to the departure station at the speed of light 20 years later, is it a meeting between two young people, or a meeting between a young man (on the platform) and a baby (on the train), The minute of a stationary person is infinitely lengthened in his life cycle). If it is the period of material change that slows down, will people on the train with the speed of light feel that their life has changed a lot? (the train has been running for 1000 years, but they have not changed at all)
7. Why does it slow down near the speed of light
8. How to understand that a year spent in a spaceship traveling at the speed of light is equivalent to a million years on earth? For example, there should be no reference to time, it is absolute. For example, my watch in the spaceship will walk slower, the same watch, the pointer speed is the same, how can it be placed on the spaceship to walk one circle time, the earth will walk ten circles
9. If a man is in a spaceship flying at the speed of light, flying at the speed of light,
10. How long does it take to get to the moon from the earth
11. The average distance between the moon and the earth is about 384400 km. How many seconds does it take for light from the moon to reach the earth?
12. How far is the earth from the sun?
13. How far is the sun from the earth?
14. Who knows how far the sun is from the earth?
15. How far is the sun from the earth
16. What is the nearest star to the earth? The nearest planet to the earth
17. How many years has the earth lived? How many years does the earth have in the end?
18. How many years is the life span of the earth?
19. How many years is the life of the earth
20. The sun and the life of the earth