Question

For communication astronauts use radio because.

Select one:

a. sound energy turns into light

in vacuum

b. vacuum repels sounds

C. sound travels at very high speed in vacuum

d. sound does not travel in vacuum​

Answer 1

Answer:

d

Explanation:

sound doesn't travel in vaccum.

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Answer 2

Answer:

option d

Explanation:

Sound does not travel in vacuum. It needs medium for propagation.

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