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Archy [21]
9 months ago
10

How long did it take for a message sent from earth to reach the first astronauts?

Physics
1 answer:
Sergeu [11.5K]9 months ago
8 0

Time taken for a message to sent from earth to reach the first astronauts is  140 second.

It takes about three days for a spacecraft to reach the Moon. in the course of that time a spacecraft travels at the least 240,000 miles 386,400 km that is the space between Earth and the Moon. The specific distance depends at the specific path selected.

The distance from earth to moon is approximately3.84*108m

So, the distance from earth to the astronauts is3.84*108m - 10500*103m =3.735*108m

The speed of light c = 2.99792458*108m/s

So, divided the distance from earth to astronauts by the speed off light,

3.735*108m/2.99792458*108m/s ˜1.25seconds

Divided the Pluto-earth distance by speed of light:

Hence, 4.2*1010m/2.99792458*108m/s = 140seconds

Learn more about astronauts here:-brainly.com/question/24496270

#SPJ4

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3 years ago
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ad for the distance from the sun tothe earth is 1.5 x 10"m. how long does it take for light from ths sun to reach the eath? give
Alexandra [31]

Answer:

About 8.3 minutes

Explanation:

Use the formula for velocity as the distance covered by the light divided the time it takes: [tex]velocity=\frac{distance}{time}[/tex]

Use the information about the speed of light in vacuum: 300000000 \frac{m}{s} = 3*10^{8} \frac{m}{s}

and the information you are given regarding the distance between Sun and Earth: 1.5 * 10^{11} m

to solve the first velocity equation for the unknown time "t":

velocity=\frac{distance}{time} \\3*10^8\frac{m}{s} =\frac{1.5*10^11 m}{t} \\t=\frac{1.5*10^11 }{3*10^8} s= 500 s

we can convert second into minutes by dividing by 60: 500 s = 500/60 minutes = 8.3333... minutes

5 0
3 years ago
29.5 inches is _______ meters. 74.9 74.9 11.6 11.6 0.749 0.749 0.116
Valentin [98]

Answer:

0.749 m

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3 years ago
A 426.7 Hz tuning fork is resonating in a closed tube on a warm day when the speed of sound is 346 m/s. What is the length of th
Arturiano [62]

Answer:

The length of the closed tube is<u> </u>

<u>0.81 m</u>

Explanation:

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Answer:

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