Question

радиосигнал, присланный на луну, отразился и был принят на земле через 2,5 с после посылки. Определите расстояние от земли до луны

Answer 1

s=vt/2=3*10(8)м/с*2.5с/2=3.75*10(8)м=375 000 км

Answer 2

Calculating the Distance from Earth to the Moon

To calculate the distance from Earth to the Moon based on the given information, we can use the time it takes for a radio signal to travel from Earth to the Moon and back.

Given that the radio signal took 2.5 seconds to travel from Earth to the Moon and back, we can use the formula:

Distance = Speed × Time

The speed of light in a vacuum is approximately 299,792 kilometers per second.

Using this information, we can calculate the distance from Earth to the Moon.

Calculation

Using the formula Distance = Speed × Time: - Speed of light = 299,792 kilometers per second - Time taken for the radio signal to travel to the Moon and back = 2.5 seconds

Distance = 299,792 km/s × 2.5 s

Result

Distance = 749,480 kilometers

Therefore, the distance from Earth to the Moon is approximately 749,480 kilometers.