the air cannot pass through trachea
In adults the narrowest part of the airway is at the level of the vocal chords, in kids it is just below the vocal chords. So when a child chokes it may be more difficult to get the object out. If it is a complete obstruction, no coughing or air moving, then the Heimlich should be started immediately. Continue until the person loses conciousness of the object is removed. If the patient passes out begin CPR. If there is coughing or air moving that makes it a partial obstruction and the person should get emergency care ASAP. Do not try to remove the object as this could cause it to lodge further in the trachea.
Coughing is caused by when your trachea or bronchi gets a small object inside that irritates it.
[object Object]
Then the object will accelerate.
We are prepared for whatever may happen. Direct object: whatever
The noun clause is 'whatever may happen', the object of the preposition 'for' and the object of the verb 'are prepared'.
It will be illuminated. Whatever else may happen depends on the substance the object is made from.
The wavelength will be shorter!
That will never happen - it can't happen actually. Any time you apply a force to an object, it will accelerate - its velocity will change.
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Nothing will happen to the object's motion, it will continue along its path.
A: Heat from the room will move to the cold object. B: Condensation will happen