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Mechanical Properties Of Fluids

Question

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While watching the science fiction movie, you see and hear a distant explosion in space simultaneously. Is it possible? If not, then what is wrong?

Solution

Explosions happen in the universe often. Even scientists suggest that universe has been created from an exlosion which is called as the Big Bang theory.
But what is wrong in the movie is, we see and hear a distant explosion in space simultaneously.
Since, velocity of sound and light is different, therefore we cannot see and hear the explosion simultaneously.
Moreover there is vacuum in the space and sound cannot travel in vacuum, therefore we cannot hear the explosion.

Some More Questions From Mechanical Properties of Fluids Chapter

What is sound?

How sound is produced?

Can sound travel in vacuum?

Can two persons hear each other on the moon? Explain.

Can electromagnetic wave propagate in vacuum?

Can we listen in vacuum?

Which of the two moves forward during wave motion - particle or disturbance?

What type of wave is sound wave when it travels in air?

What type of wave is sound wave when it travels in solids?

Which of the two - sound or light is longitudinal in nature?

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