The Moon is 380 000km from the Earth. A laser light beam is directed from the Earth to the
Moon. The beam is reflected back to the Earth.
How long does it take for the light to travel to the Moon and back to the Earth?
idk lol
time = distance/speed
To calculate the time it takes for light to travel from the Earth to the Moon and back, we need to consider the distance between them and the speed of light.
The distance between the Earth and the Moon is approximately 380,000 km.
The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).
To find the time it takes light to travel to the Moon and back, we can divide the total distance by the speed of light:
Total distance = Distance to the Moon + Distance from the Moon to the Earth
Total distance = 380,000 km + 380,000 km = 760,000 km
Time = Total distance / Speed of light
Time = 760,000 km / 299,792 km/s
Calculating this:
Time ≈ 2.536 seconds
Therefore, it takes approximately 2.536 seconds for the light beam to travel from the Earth to the Moon and back.
To find out how long it takes for the light to travel from the Earth to the Moon and back, we must consider the speed of light. The speed of light in a vacuum is approximately 299,792 kilometers per second (km/s).
Since the Moon is 380,000 kilometers away from the Earth, it will take light approximately:
Time = Distance / Speed
Time = 2 * Distance / Speed
Time = (2 * 380,000 km) / (299,792 km/s)
Time ≈ 2.5333 seconds
Therefore, it takes approximately 2.5333 seconds for light to travel from the Earth to the Moon and back.