# Two astronauts are 1.30 m apart in their spaceship. One speaks to the other. The conversation is transmitted to earth via electromagnetic waves. The time it takes for sound waves to travel at 354 m/s through the air between the astronauts equals the time it takes for the electromagnetic waves to travel to the earth. How far away from the earth is the spaceship?

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Two astronauts are 1.30 m apart in their spaceship. One speaks to the other. The conversation is transmitted to earth via electromagnetic waves. The time it takes for sound waves to travel at 354 m/s through the air between the astronauts equals the time it takes for the electromagnetic waves to travel to the earth. How far away from the earth is the spaceship?

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Step 1

The time it takes for sound waves to travel at 354 m/s through the air between the astronauts is,

Step 2

The time it takes for the electromagnetic waves to travel to the earth is,

Step 3

As both the times are equal, equate both e...

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