Physics
When an unbalanced force acts on an object

All of these
The speed & direction of the object will change
Causes change in motion of the object
Causes the object to move

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Physics
Inside an aeroplane, flying at a high altitude,

the pressure is the same as that outside.
the pressure inside is less than the pressure outside.
normal humidity and partial vacuum are maintained.
normal atmospheric pressure is maintained by the use of air pumps.

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