Question

What causes movement of air in fans. What pushes the air forward

Answer 1

Explanation:

For a stream of air to speed up, some of the energy from the random motion of the air molecules must be converted into the energy of forward stream flow. The random motion of air molecules is what causes air pressure; so transferring energy from the random motion to the stream flow results in lower air pressure.

Answer 2

Answer:

For a stream of air to speed up, some of the energy from the random motion of the air molecules must be converted into the energy of forward stream flow. The random motion of air molecules is what causes air pressure; so transferring energy from the random motion to the stream flow results in lower air pressure.

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